TEXT: EN World EN5IDER | Día de los Dinosaurios Muertos
   
  writing  Jensen Toperzer
   color art  Melissa Tillery
   
  maps  Justin Mason
   
  editing  James Haeck
   
  layout  Eric Life-Putnam
  T
  he ciTy of New AzTláN is iN The midsT of 
  the most important religious celebration 
  of the year. Unfortunately for the residents 
  of New Aztlán, something evil stirs beneath the 
  city. Unbeknownst to them, the ancient ruins 
  New Aztlán was built atop were in fact from a 
  civilization of feathered serpents—dinosaurs! 
  Dia de los
  Dinosaurios 
  Muertos
  a fantasy adventure for 4–5 pcs of 14th level
  EN World EN5IDER | Día de los Dinosaurios Muertos
  
  Día de los Dinosaurios Muertos | EN World EN5IDER
   Unfortunately for the residents of New 
  Aztlán, something evil stirs beneath the city. 
  Unbeknownst to them, the ancient ruins New 
  Aztlán was built atop were in fact from a 
  civilization of feathered serpents—dinosaurs!
   When the first Day of the Dead celebrations 
  began, the slumbering dead of the ancient 
  dinosaur civilization awoke, only to find their 
  beloved city overrun by filthy, hairless apes. The 
  raptors have awakened in secret on each Day of 
  the Dead since, and have been plotting to rise and 
  reclaim what is theirs.
   Soon New Aztlán will bow to their undead, 
  feathery overlords! 
  GM Introduction
  The city of New Aztlán is in the midst of the 
  most important religious celebration of the year, 
  the Day of the Dead. Dedicated to the goddess 
  Mictecacihuatl (meek-TEKA-kee-wadl), the day 
  marks a date when the barriers between the realm 
  of the dead and the living are thin. Willing spirits 
  of the dead are summoned into skeletal vessels, 
  called calacas, and for the day they can meet their 
  living descendants and spend the day celebrating. 
  The calacas are artfully decorated skeleton 
  sculptures usually made of plaster, wire, and clay, 
  and decorated with the belongings of the deceased. 
  Clerics work minor magic to ask the deceased to 
  briefly return during el día de los muertos. 
  Pronunciation of Names & Terms (and English alternatives)
  As this adventure is rooted in Central American 
  mythology, it uses names and terms in either Na-
  huatl (the language of the Aztec Triple Alliance) or in 
  Mexican Spanish that may be unfamiliar to English-
  speaking GMs and players. Below are pronunciations 
  and English translations of names and terms used 
  in this adventure. The Nahuatl and Spanish terms 
  are used throughout this document, but English 
  translations can be used if the Nahuatl names prove 
  unwieldy or confusing in play. 
  Name
   Pronunciation
  Meaning
  English Equivalent
  (New) Aztlán
  (New) ahz-LAN
  Name of the city in which the adventure takes 
  place.
  (New) Heron City
  Mictecacihuatl
  meek-teh-cuh-WAHDL
  Goddess of the Dead [NG].
  Lady Death
  Miquiztlicoatl
  mee-KIS-tli-ko-AHDL
  Villain of the adventure; evil velociraptor priest
  Death Serpent
  Coaxoch
  co-AX-otch
  High priestess of Miquiztlicoatl.
  Serpent Flower
  Zócalo
  SO-cah-lo
  Center of town, town square.
  Town Square, City 
  Center, Grand Plaza
  Calaca
  KA-laka
  Plaster-and-paper reanimated skeleton figure, 
  containing the soul of an honored ancestor.
  Blessed Dead
  Tlaloc
  tla-LOK
  God of storms [LN], husband of Chalchiuhtlicue. Storm Lord
  Chalchiuhtlicue
  cha-CHIW-tli-que
  Goddess of rivers and lakes [LN], wife of Tlaloc.
  She of the Jade Skirt
  Quetzalcoatl
  ketzal-ko-AHDL
  God of wind and knowledge [CG].
  Feathered Serpent
  Huitzilopochtli
  huitsilo-POCHTLI
  God of war, sun, fire, conquest, and rulership 
  [LE]. Brother of Itzpapalotl.
  The Southern 
  Hummingbird
  Itzpapalotl
  eetspaa-pa-LAHDL
  Demon goddess of stars, patron of pregnant 
  women and woman warriors [CE]. Sister of 
  Huitzilopochtli.
  The Obsidian 
  Butterfly
  Día de los Dinosaurios Muertos | EN World EN5IDER
  
  EN World EN5IDER | Día de los Dinosaurios Muertos
  Background
  Miquiztlicoatl, a velociraptor mummy lord, is 
  the true power behind the risen raptors. When 
  Miquiztlicoatl lived, he was a priest-king and 
  usurper of the feathered throne. When he rose 
  to power, the raptor and his supporters broke 
  from the old gods, the twin Feathered Lords, and 
  established a selfish new religion that sought 
  immortality through undeath.
   It was not to last. For Miquiztlicoatl’s hubris, 
  Quetzalcoatl and the Feathered Lords called down 
  a flood to sink the Feathered Capital and cursed 
  Miquiztlicoatl and any who had followed him 
  to never find rest in the afterlife. Miquiztlicoatl 
  vowed he would return, reclaim his kingdom, and 
  take his place as a living god.
   Many centuries later, humans founded New 
  Aztlán upon the ruins of the Feathered Capital. 
  Three hundred and sixty years ago, the people of 
  New Aztlán celebrated the first Day of the Dead.
  Little did they know that the necrotic energies 
  involved in raising calacas for the Day of the Dead 
  also revived the ancient dead of the Feathered 
  Kingdom. For the past three hundred and sixty 
  years, the raptors have awoken only on the Day of 
  the Dead. From their perspective, less than a year 
  has passed since the Feathered Capital sank. In 
  that year, Miquiztlicoatl quietly had his servants 
  kidnap celebrants and sacrifice them to the Stone 
  of the Inverted Sun, an artifact altar made from a 
  slab of polished obsidian.
   This is the 361st day of the fragmented year that 
  Miquiztlicoatl has been returned to this world, 
  the Stone of the Inverted Sun has been infused with 
  enough necrotic energy to keep the gateway to the 
  land of the dead open permanently. At the dawn 
  of the next day, the calacas will not fall back into 
  slumber, and Miquiztlicoatl’s undead armies will 
  reclaim New Aztlán—unless the souls trapped 
  within the Stone of the Inverted Sun are released.
  Overview
  Día de los Dinosaurios Muertos is divided into three 
  parts: first, an exploration of the Day of the Dead 
  festival in New Atzlan followed by an undead 
  assault on the city, and finally a dungeon delve 
  into the ruined undercity of New Atzlan and the 
  final confrontation with Miquiztlicoatl. 
   The adventure begins with the adventurers at 
  the Day of the Dead festival in the Zócalo of New 
  Aztlán. The festival is attacked at sundown by 
  undead velociraptors, most of whom rise up from 
  the canals that cross the city, pulling themselves 
  out of the silt and muck. Observant characters can 
  notice this, and then track the greater undead to 
  four entrances around the Zócalo. If the PCs fail 
  to track the raptor commanders to these entrances, 
  they can ask citizens about where such an attack 
  might come from. 
   The characters must then navigate the 
  Undercity of the Feathered Ones to learn what has 
  caused its ancient people to return to life. In their 
  investigations, they learn that the source of evil in 
  New Aztlán is Miquiztlicoatl the Death Serpent 
  and the Stone of the Inverted Sun (see Monster 
  Index, Miquiztlicoatl), and he must be destroyed.
  Character Hooks
   ▶ A character who wishes to commune with a 
  deceased loved one has heard that in New 
  Aztlán, it is possible to spend a single day 
  with those who have gone before. 
   ▶ A character hears that New Aztlán is built on 
  the ruins of a much older city, one that, due 
  to local superstition, has never been explored. 
  It must be full of treasure! 
   ▶ A character is watching the stars or talking to 
  their god, and hears whispers of something 
  dark stirring beneath the earth. They receive 
  a vision of day of joyous reuniting unmade 
  by feathers and bone. The vision points them 
  towards New Aztlán. 
   ▶ The characters have heard tales of the Day of 
  the Dead festival and travel to New Aztlán 
  as tourists.
  EN World EN5IDER | Día de los Dinosaurios Muertos
  
  Día de los Dinosaurios Muertos | EN World EN5IDER
  the ritual costs 50 gp. Finally, local clerics are 
  happy to teach characters with the ability to cast 
  raise dead or animate dead how to enact the ritual. 
  Part I: The Day of the Dead
  This part of the adventure takes place in the 
  Zócalo of New Aztlán. 
  The streets of New Aztlán are filled with celebrants 
  and with merchants hawking paper flowers, sugar 
  skulls, masks, and candy. All are dressed in their finest 
  clothes: men in elaborately embroidered charro suits, 
  wide sombreros, and long pointed shoes; women in 
  white blouses, intricately-woven shawls, and colorful 
  skirts. Many are accompanied by ornately decorated 
  skeletal figures who walk unaided and chat loudly 
  with anyone who will listen.
   Occasionally, priests and priestesses pass 
  unimpeded through the crowd, dressed in traditional 
  ceremonial clothing, with elaborate headdresses 
  made from feathers, jaguar claws, crocodile teeth, 
  jade, and gold, each different depending on the god 
  they serve. One priestess stands beside a family of 
  three in a small shrine, chanting an incantation over 
  a prostrate skeleton—and when she completes her 
  spell, the skeleton sits bolt upright and thanks her 
  profusely before departing with the family. A grand 
  parade fills the main thoroughfare, with tumblers and 
  flame jugglers in wild feathered clothing. 
  New Aztlán is a thriving metropolis, and the 
  Day of the Dead is a day when many merchants 
  come to town. Characters can buy a multitude of 
  unusual items if they have the money, including 
  uncommon and rare magic items. Discerning 
  buyers can notice that there are con artists trying 
  to pass off worthless trinkets as magic items. 
  When buying a magic item, there is an 80% 
  chance that the item is a fake. The buyer must 
  make a Wisdom (Insight) check contested against 
  the merchant’s Charisma (Deception) check to 
  determine if the item is counterfeit.
   A character can hire a cleric to build a calaca (see 
  sidebar) and animate it for them for 200 gp. They 
  need to have something belonging to the deceased 
  in order to successfully animate the calaca. If the 
  characters already have a calcaca built and ready, 
  Calacas
  The calacas in this adventure are based on the real-
  life Day of the Dead practice of making whimsical 
  skeleton figures to celebrate the deceased. In New 
  Aztlán, they are constructs that contain the will-
  ingly returned souls of the dead. This magic only 
  works on the Day of the Dead. Turn Undead and 
  other similar powers do not affect calacas, as they 
  are constructs, not undead. They are otherwise 
  identical to skeletons, and an animate calaca is 
  the person they were in life with the skeleton tem-
  plate* applied, though they have the construct 
  type, not undead.
    Calacas can consume (but do not require) food 
  and drink, and much of the preparation of the 
  festival involves obtaining alcohol and food that 
  the deceased enjoyed in life for them to savor 
  before returning to the land of the dead. Generally, 
  calacas spend time with their families and friends, 
  catching up on news (like holiday letters, but to 
  the dead) and telling young ones stories.
   A calaca is made by creating a skeleton out of 
  papier-mâché, wire, and paint, as well as an object 
  treasured by the deceased. Any spirit may inhabit 
  a given calaca so long as an object specific to them 
  is included in the ritual, but the spirits of the dead 
  prefer skeletons similar to the form they had in life. 
  On the Day of the Dead, anyone capable of casting 
  raise dead or animate dead may enact a 10-minute 
  ritual, provided they know it, to bind the de-
  ceased’s soul to the calaca. At sunrise, all calacas 
  become inert. A calaca may be reused from year to 
  year, so long as it’s well-maintained. Calacas are 
  passed down within families from generation to 
  generation, and often stored in a place of honor for 
  the rest of the year. 
  *  Cedar Collins, Template of Horrors, EN World EN5ider,  
  https://www.patreon.com/posts/template-of-3538942
  Día de los Dinosaurios Muertos | EN World EN5IDER
  
  EN World EN5IDER | Día de los Dinosaurios Muertos
  The City of New Aztlán
  New Aztlán sits in the middle of a lake. On the 
  lake are floating gardens that provide most of the 
  food for the city. Four bridges connect the city 
  to the mainland. In addition to roads, the city is 
  crisscrossed by canals. This adventure largely 
  takes place in the Zócalo, New Aztlán’s central 
  district. Directly beneath the Zócalo lies the 
  ruined center of the City of the Feathered Ones. 
  Sites of Interest
  The following locations in New Aztlán are usable 
  in Part I of this adventure while the characters 
  explore the city and interact with its people, but 
  can also be used as locations of mayhem and 
  panic in Part II
  1. The Sacred Precinct. East of the Zócalo 
  is the religious center of the city, home 
  of the Temple of the Sixth Sun (a newer 
  god; a human who sacrificed himself to 
  become the new sun and thus end the 
  necessity for human sacrifice), the Temple 
  of Mictecacihuatl, the Tower of Winds 
  (temple of Quetzalcoatl), and the Temple of 
  Huitzilopochtli. 
  2. The National Palace. To north of the Zócalo 
  is the primary seat of government, the 
  National Palace, where the Revered Speaker 
  (equivalent to a prime minister) of the city-
  state of New Aztlán leads the Parliament. 
  3. Plaza Gabriel. A large plaza at the center of 
  the Merchant’s Quarter (to the south of the 
  Zócalo), this place is known for the mariachi 
  bands and other musicians that perform 
  open air concerts every day and for the 
  excellent open-air restaurants that ring the 
  place.
  4. Cheerful Chihuahuas. Catrina, the owner, 
  sells more than just chihuahuas—she also 
  carries flying snakes, frogs, mastiffs, cats, 
  lizards, rats, and parrots—but the tiny dogs 
  are what she’s most well known for. Any 
  animals purchased from Catrina come pre-
  trained with two actions.*
  5. University of New Aztlán. The people of 
  New Aztlán have always valued public 
  education, and their national university is 
  completely free to the public. The University 
  strongly supports the study of arcane magic, 
  and welcomes wizards and other arcanists 
  who wish to further their studies. Any 
  wizard spell of up to 4th level can be copied 
  into a spellbook here, but the process takes 
  five times as long.
  6. Grand Zoological Park and Gardens. Once 
  the home of the emperor’s palace and zoo, it 
  was converted into a public park when New 
  Aztlán became a parliamentary democracy. 
  A flumph stays at the zoo voluntarily in 
  exchange for conversation with tourists. 
  7. The Butterfly and Cricket. A famous 
  restaurant south of the Zócalo, this place has 
  the very best insect-based food in the city, 
  including their famous cricket tacos (insects 
  are a staple of cuisine in New Aztlán).
  8. Four Hundred Rabbits. Part bar, part 
  distillery, part brewery, and all temple, 
  this watering hole in the Sacred Precinct is 
  dedicated to the Centzon Totochtin (sen-
  TSON to-to-CHTIN), four hundred rabbit 
  gods of drunken revelry. The priests here 
  both create and serve various beers (mostly 
  corn beer), pulque (fermented agave sap), 
  tequilas, and mezcals. The priests brewed 
  most of the drinks sold on the Day of the 
  Dead. 
  9. Hotel Quetzal. A posh, expensive hotel (5 
  gp per night) north of the Zócalo with an 
  exceptional bar on the first floor. 
  10.  Jose’s Flophouse. A rather seedy flophouse 
  (2 sp per night) south of the Zócalo.
  *  Jensen Toperzer, Pets for Players, EN World EN5ider,  
  https://www.patreon.com/posts/1882495
  EN World EN5IDER | Día de los Dinosaurios Muertos
  
  Día de los Dinosaurios Muertos | EN World EN5IDER
  Zócalo and the Sacred Precinct
  Most of the festivities take place in the Zócalo, 
  a spacious communal area dominated by the 
  temple to Tlaloc and a sports arena for playing 
  ollamaliztli (olla-ma-LIZ-tli), a game similar to 
  basketball and handball. The area is also marked 
  by grassy green lawns, flower gardens, and trees. 
  Today, merchants hawk wares from tents set up 
  on the grassy areas, and each of the major temples 
  besides the Tower of Waters have a small tent set 
  up for various services, such as information and 
  music.
  Entrances to the Undercity
  As New Aztlán was built atop the City of the 
  Feathered Ones, many of its waterways lead to 
  the city below. 
   The Zócalo Communal Well is 200 feet deep 
  and enchanted with a permanent purify water 
  spell. Halfway down is a hole in the wall that 
  leads to the Undercity East Gate (see Part III, 
  Area 4). There is a ladder on the well wall. Under 
  the North Canal Bridge is a hidden sewer grate 
  that leads to Undercity North Gate (see Part III, 
  Area 1). Stairs lead down to the water’s surface 
  from the canal edge. 
   East of the Zócalo is the Tower of Waters, a 
  temple to Tlaloc and Chalchiuhtlicue. Inside is 
  a 50-foot deep circular stepwell. Halfway down, 
  near the surface of the water, is a hole in a wall 
  that leads to the Undercity West Gate (see Part III, 
  Area 2). 
  Local Rumors
  Roll once on this table when the player characters 
  ask residents about the city, and use other 
  information from this table to clarify as needed
  Local Rumor Table
  d8 Rumor
  1
  New Aztlán is built on the ruins of a much older 
  city. In fact, the Temple of the Sixth Sun was built 
  over an ancient temple to Quetzalcoatl, which was 
  sealed. 
  2
  No one goes into the ruins under the city. Some 
  claim this is because it’s infested with disease, I 
  heard it’s because the city was cursed by the gods 
  for an unknown crime.
  3
  The people of the old city defied Quetzalcoatl and 
  were drowned for their hubris. 
  4
  Papa says that the feathered serpent carvings 
  along the canals aren’t of Quetzalcoatl at all, but of 
  evil serpents who lived before us. 
  5
  Every year, people go missing on the Day of the 
  Dead and are never found. We always search for 
  them, but no one is willing to enter the abandoned 
  city under the Zócalo.
  6
  I heard noises from the neighborhood well (see 
  “Zócalo Communal Well,” above) this morning. 
  Creepy. 
  7
  Once, a friend of mine said she found dragon 
  bones in the sewers. But dragons don’t live 
  anywhere near here—right? (Partially false: no 
  dragons, just dinosaurs.)
  8
  Anyone who has gone missing during the Day of 
  the Dead in previous years cannot be summoned 
  as a calaca. That means they’re still alive, I know it!
  Día de los Dinosaurios Muertos | EN World EN5IDER
  
  EN World EN5IDER | Día de los Dinosaurios Muertos
  EN World EN5IDER | Día de los Dinosaurios Muertos
  
  Día de los Dinosaurios Muertos | EN World EN5IDER
  Part II: Raptor Attack!
  Civilian Involvement Table
  d20
  Civilian Event
  1–10
  2d12 frightened commoners and calacas (as 
  skeletons with AC 10, hp 4, and no weapons) 
  of mixed ages. 1 in 6 chance of having seen 
  raptors emerge from the sewer grates by the 
  North Canal (see “Entrances to the Undercity,” 
  above). 
  11–13 2d6 angry merchants (as nobles) around 
  an upended tent, fighting off raptors with 
  improvised clubs. Each has a random trinket.
  14–16 2d6 city guards wearing jaguar skin cloaks and 
  jaguar skull helmets.
  18–19 1d6 priests of a random god: roll 1d6. 
  1 Mictlancihuatl (Death, Life)
  2 Tlaloc (Storm, Nature) 
  3 Chalchiuhtlicue (Nature, Life)
  4 The Sixth Sun (Life, Sun)
  5 Huitzilopochtli (War, Sun)
  6 Quetzalcoatl (Storm, Knowledge)
  Clerics of Tlaloc and Chalchiuhtlicue report 
  that raptors have been coming out of the Tower 
  of Waters (see “Entrances to the Undercity,” 
  above). Clerics of Quetzalcoatl and the Sixth 
  Sun will report sensing a terrible darkness deep 
  beneath the Temple of the Sixth Sun, likely 
  in the ruins the temple was built over top of. 
  Clerics of Mictlancihuatl and Huitzilopochtli are 
  coordinating evacuation efforts along the main 
  roads out of the city and advising civilians to 
  avoid the canals. 
  20
  1d6 calacas (as knights with the skeleton 
  template) from a military memorial service. 
  Rewards
  Citizens all ask to be rescued from the undead 
  dinosaurs, and they will try to reward the 
  characters if saved. Most civilians can’t do much, 
  but priests can cast spells, and merchants have a 
  25% chance of having a random potion.
  A
  fTer The chArAcTers hAve hAd some Time To 
   explore the festival and get comfortable, 
    the raptors attack. From this point on, roll 
  on the Raptor Attack and Citizen Involvement 
  tables every 30 seconds the characters spend in 
  the Zócalo, even if another encounter is currently 
  in progress. They may be able to stand against the 
  tide of undead for a time but must eventually seek 
  either refuge or the source.
   The zombie and skeleton dinosaurs pull 
  themselves up out of the mud in the canals. They 
  are covered in mud and silt, with still-flopping 
  fish caught in their decaying bodies. Their 
  appearance contrasts starkly with the priest 
  and mummy dinosaurs, who are pristine and 
  resplendent. All dinosaurs speak Draconic. If the 
  characters cannot save civilians with information 
  about the invaders, they can still track the higher-
  tier undead back to the Undercity by making a 
  DC 17 Wisdom (Survival) check. 
  Raptor Attack Table
  d20
  Raptors
  1–10
  3d4 velociraptor skeletons
  11–14 1d6 velociraptor zombies, led by a raptor 
  priest 
  15–16 1d4 velociraptor skeletons riding allosaurus 
  skeletons
  17–18 1d4 velociraptor zombies riding 
  ankylosaurus zombies
  19
  2 raptor priests each riding zombie triceratops
  20
  2 raptor mummy nobles, accompanied by 
  another group (roll again, rerolling 20s). These 
  raptors are a couple. They will not initiate 
  combat; instead they simply watch the work 
  of their minions. They comment loudly and 
  obnoxiously on the battle, and mention that 
  their lord Miquiztlicoatl will be pleased. If 
  attacked, they will first try to inflict their Curse 
  of Itzpapalotl, then use their Dread Gaze and 
  attempt to flee back to the closest entrance to 
  the Undercity.
  Día de los Dinosaurios Muertos | EN World EN5IDER
  
  EN World EN5IDER | Día de los Dinosaurios Muertos
  If the characters choose to assist with the city 
  evacuation before entering the Undercity, various 
  priests of the gods provide their blessings as 
  rewards:
   ▶ Tlaloc and Chalchiuhtlicue: For the next 
  week, beasts and water elementals that you 
  can see are charmed and friendly towards 
  you.
   ▶ Quetzalcoatl: You gain advantage on the 
  next three Intelligence (History, Religion, 
  Arcana, and Nature) checks you make within 
  the next 24 hours. 
   ▶ Mictecacihuatl: During the next 24 hours, 
  you may make up to 3 death saving throws 
  with advantage. 
   ▶ Huitzilopochtli: Once in the next 24 hours, 
  you may gain a +10 bonus on a single attack 
  roll or ability check. 
  Part III: The Feathered Capital
  General Dungeon 
  Features 
   ▶ Doors. All doors are made of porous 
  stone and are stuck due to water 
  expansion.
   ▶ Light. Unless otherwise noted, 
  dim light is shed throughout by 
  bioluminescent algae, mosses, mold, 
  fungi, and harmless freshwater 
  jellyfish. 
   ▶ Sewage. Unless otherwise noted, 
  all exterior, ground-level areas are 
  covered in 1 foot of stagnant sewer 
  water. Stalagmites and broken rubble 
  litter the floor, making exterior areas 
  difficult terrain. The undead here are 
  never hindered by the water. Water 
  is infested with sewer plague (as in 
  the GM’s core rulebook). Any time a 
  character is completely submerged 
  in water, they must make a DC 11 
  Constitution save or become infected. 
   ▶ Ceilings. The ceiling of the main 
  cavern is 250 feet. Interior rooms are 20 
  feet high, unless otherwise stated. 
  1. Undercity North Gate
  This large stone arch is decorated with 
  frescoes of velociraptors at market, and has 
  a gold coin symbol inscribed atop the arch. 
  Interacting with the Raptors
  All intelligent raptors speak Draconic. Most of the undead 
  raptor civilians left in the city believe they are living out 
  their old lives, that they are still alive, the sun is shining, 
  and the city was never destroyed. They see the charac-
  ters as strange foreigners and are not initially hostile. 
  If asked about the situation, they blithely explain that 
  Miquiztlicoatl’s soldiers are bringing back sacrifices so 
  they may all be made immortal and overthrow the gods 
  themselves. They happily explain their religion (which 
  boils down to blind worship of Miquiztlicoatl and ex-
  travagant self-centeredness) and suggest the characters 
  convert. If confronted with irrefutable proof that they are 
  undead and they are being deluded by Miquiztlicoatl, the 
  raptors break down, scream, and immediately become 
  hostile; in turn, other raptors within hearing of the 
  breakdown investigate the disturbance. 
   Characters may attempt a DC 28 Charisma (Persua-
  sion) check as an action to calm a berserk raptor and 
  convince that they should join the characters against 
  Miquiztlicoatl. This DC drops by 2 for each raptor allied 
  with the party, but cannot be lower than 20. All raptor 
  priests and mummies are perfectly aware of the true 
  situation, but are reluctant to attack characters when 
  normal undead raptors are present unless the characters 
  are proven interlopers or actively hostile, as this would 
  reveal their deception. If they see that the characters 
  have raptor followers, they pretend to be convinced and 
  guide them to the Gladiator Stone, where they command 
  the tyrannosaurus rex zombie to kill the characters.
  EN World EN5IDER | Día de los Dinosaurios Muertos
  
  Día de los Dinosaurios Muertos | EN World EN5IDER
  2. Undercity West Gate
  This large stone arch is decorated with frescoes of 
  velociraptors playing ball and conducting ritual 
  sacrifices, and has the symbol of a ring from the 
  ball court inscribed atop the arch.
  3. Ruined South Gate
  This gate is caved-in. If excavated (an arduous, 
  12-hour process of manual labor), it leads to a 
  grate in a corner of the Grand Zoological Park and 
  Gardens (see Part I, Area 8). 
  4. Undercity East Gate
  This large stone arch is decorated with a fresco of 
  an imperious velociraptor in a grand feathered 
  headdress, and has the symbol of a butterfly 
  inscribed atop the arch. 
  5. Ball Court
  This ball court is an I-shaped arena with two circular 
  hoops at either corner of the middle rectangle. There 
  are stadium seats around the court, plus a box for the 
  nobility. The walls are covered in frescos depicting 
  velociraptors engaged in sport. 
  Two teams of five velociraptor skeletons are 
  playing a ball game. The objective is to get a 
  heavy rubber ball through a hoop on either side 
  of the court. Five more velociraptor skeletons 
  watch on the sidelines. In the elevated private box 
  sit two raptor mummies, a raptor priest, and a 
  velociraptor skeleton playing a drum. 
   When one team loses, they are brought before 
  the nobles and play-act being “executed,” with 
  the priest miming cutting out hearts from their 
  nonexistent flesh with a ceremonial knife. Each 
  “heart” is placed on an altar. All assembled 
  will bow their heads and recite a prayer to 
  Miquiztlicoatl. The priest will then return the 
  hearts to the players, who “awaken,” and the 
  whole game begins again. If the characters speak 
  to any of the spectators, they talk incessantly 
  about the game, commenting as though it were a 
  perfectly normal sporting match. 
   If attacked, the raptors will retaliate, but aim 
  to knock out intruders, not to kill. When the 
  characters regain consciousness, they are dressed 
  in appropriate sporting gear and forced to play 
  the game against the opposing team. If there 
  are fewer than five characters, a velociraptor 
  skeleton joins them to even the teams; if there are 
  more than five characters, they will face an equal 
  number of skeletal raptors on the opposing team. 
  The playing field is clean and dry. 
   Treat the game as a combat round where instead 
  of attacks, each player on the characters’ team 
  makes either a Strength (Athletics) or Dexterity 
  (Acrobatics) check opposed to similar checks on 
  the raptor team. If more than half the players on 
  a team succeed on the opposed check, that team 
  makes a basket and scores one point. The game 
  ends after five rounds and the team with the 
  most points wins. If a character is caught cheating 
  (their Dexterity [Sleight of Hand] vs. the raptor 
  priest referee’s Wisdom [Perception]), the priest 
  penalizes their team 1 point.
   If the characters win, the opposing team is 
  “executed.” The priest compliments the victors 
  and allows them to leave. If the characters 
  lose, they are executed for real as sacrifices to 
  Miquiztlicoatl. If the characters at any point refuse 
  to play the game or try to escape, they’ll have to 
  fight their way out; this time, the ball players will 
  join in, and all fight to the death. 
  6. Emperor’s Feast Hall 
  You enter a magnificent feast hall, its tables piled 
  high with food and treasure: gold jewelry, jade masks, 
  steaming cups of spiced hot chocolate, roasted 
  salamanders, crayfish, tacos made with roasted 
  grasshoppers and mealworms, and sweet cactus 
  liquor. A dozen raptors sit around a table, and their 
  conversation pauses as you enter. One raptor mummy 
  stands and rasps, “Ah, our honored guests have 
  arrived! Please, sit. Feast with us!”
  The raptor mummy who greets the characters 
  is Coaxoch, high priestess of Miquiztlicoatl. 
  Día de los Dinosaurios Muertos | EN World EN5IDER
  
  EN World EN5IDER | Día de los Dinosaurios Muertos
  EN World EN5IDER | Día de los Dinosaurios Muertos
  
  Día de los Dinosaurios Muertos | EN World EN5IDER
  Around her neck is an obsidian key that 
  unlocks the door to Area 10. A group of minor 
  nobles regularly gathers in Miquiztlicoatl’s 
  banquet hall to celebrate undeath. This group of 
  6 velociraptor skeletons, 4 velociraptor priests, 
  and 2 velociraptor mummies is occasionally 
  joined by Miquiztlicoatl the Death Serpent. If the 
  characters enter the feast hall on the Day of the 
  Dead, Miquiztlicoatl is in Area 10, enacting the 
  ritual of the Inverted Sun. If they arrive here after 
  the Day of the Dead has ended, Miquiztlicoatl has 
  a 50% chance of being here and a 50% chance of 
  basking in the glow of the Stone of the Inverted Sun 
  in Area 10. 
   The food here seems sumptuous and completely 
  edible: The food is real, though it was magically 
  conjured. The table is decorated with golden 
  ornaments, holy symbols, jade masks, and 
  intricate stone carvings worth a total of 1,200 gp.
   If characters eat the food, they must make a 
  DC 12 constitution save within the hour or be 
  afflicted by the Curse of Itzpapalotl (see Monster 
  Index, raptor mummy), unless the character 
  is a calaca, construct, undead, a dinosaur, or a 
  dragonborn. For those latter cases, the characters 
  are affected as though they had consumed a heroes’ 
  feast. If characters susceptible to the curse sit, eat, 
  and don’t cause trouble, Coaxoch and her guests 
  laugh politely, thank them for their time, and send 
  them on their way after the feast. If any of the 
  characters are able to benefit from the heroes’ feast 
  instead, the gathered raptors grow increasingly 
  worried as the feast continues, then explode in 
  rage and immediately attack the characters in 
  question. 
   If the characters refuse to eat, Coaxoch slams 
  her cup of chocolate on the table and roars, “How 
  dare you refuse our hospitality! Minions, destroy 
  the interlopers!” All revelers attack.
  7. Merchant’s District
  This public square is set a few feet into the ground, 
  increasing the water depth to 3 feet. The seven 
  pyramid shaped buildings around the square, 
  however, are on platforms, and are relatively dry 
  inside. Sixteen tents and stalls are set up in the 
  water in the square. Each has one a velociraptor 
  skeleton selling wares. The market seems oddly 
  empty, with only 2d6 velociraptor zombies 
  browsing the wares. 
   If attacked, merchants and patrons will call the 
  guards; 1d6 velociraptor skeletons mounted on 
  ankylosaurus zombies arrive 1d4 rounds later. 
   If questioned about why the market seems 
  empty, its patrons will shrug and simply say that 
  many people have gone off to fight a glorious 
  war in the name of the Feathered Lords. They will 
  no doubt return in time for the festival. Asked 
  about anything else, and they will simply make 
  small talk about the market. Each stall location 
  additionally sells three trinkets for 5 gp each. 
  7a. Apothecary
  There are potions sold here that cure the Curse 
  of Itzpapalotl (200 gp each), but there is a 50% 
  chance a given potion has spoiled over the 
  centuries and acts as torpor poison (see GM’s core 
  rulebook). 
  7b. Storage Room
  Most of the objects here are rotted through, but 
  there are dozens of silver baubles and holy icons 
  worth a total of 310 gp. 
  7c. Bunkhouse
  A two-level bunkhouse for merchant travelers. 
  Characters can buy a room here for 1 sp a day, but 
  must take the upper floors, as the lower floors are 
  covered with sewage. 
  7d. Tavern.
  2d6 patrons (velociraptor skeletons) are on the 
  first floor, laughing, drinking, and eating, though 
  the skeletal patrons’ food falls right through 
  their ribcages and onto the floor. Examination 
  reveals that the “food” is mostly clay models that 
  resemble food, while the “drinks” are either just 
  sewer water or else vile concoctions that deal 1d6 
  poison damage to any living being consuming 
  them. 
  Día de los Dinosaurios Muertos | EN World EN5IDER
  
  EN World EN5IDER | Día de los Dinosaurios Muertos
  7e. Bunkhouse
   A two-level bunkhouse for wealthy travelers. 
  Rooms here cost 2 gp per day, but the rooms on 
  the second floor have actual beds stuffed with 
  feathers. The rooms have heavy stone doors that 
  can be locked and barricaded.
  7f. Treasury
  A treasury house, guarded by 3 raptor mummies 
  who alert the guard if threatened. Treat the 
  contents as a challenge 5–10 treasure hoard. 
  7g. Bookstore
  Most of the books here are rotten or useless 
  except for a text telling the history of the 
  Feathered Capital, mostly about Miquiztlicoatl’s 
  assassination of the emperor, his rise to power, 
  and the establishment of his cult. Though 
  obviously biased to portray Miquiztlicoatl in a 
  positive light, most characters will find the acts 
  of brutality described to be abhorrent. Tucked 
  between its pages is chance a random 5th-level 
  spell scroll. 
  8. Skull Rack
  Before you stands a massive row of cubbyholes, each 
  containing skulls. Most contain velociraptor skulls, 
  but some contain goblin, orc, kobold, and dwarf 
  skulls. Towards one end are far newer skulls; most of 
  them once belonged to humans, elves, or dwarves. 
  The skulls all chatter mindlessly in their native 
  languages, but occasionally they spout bits of 
  truth. A successful DC 20 Wisdom (Perception) 
  check allows a character to hear the story of 
  Miquiztlicoatl, the Stone of the Inverted Sun, and 
  his ultimate goal. 
  9. Gladiator Stone 
  Chained to this ancient obelisk is a resplendently-
  feathered tyrannosaurus rex zombie. Though 
  undead, she is in excellent condition. She is 
  more intelligent than average tyrannosaur 
  (Intelligence 3), but is still a mere beast 
  compared to her velociraptor masters. She is 
  capable of mimicking speech like a parrot and 
  speaking very rudimentary Draconic, though 
  her understanding and reasoning is profoundly 
  alien. She understands simple mathematical and 
  spatial reasoning, but emotional concepts are well 
  beyond her. She hums, chirps, and sings to herself 
  to pass the time, but mostly she wants food or fun. 
  Right now, she is bored, and the characters look 
  delicious and entertaining. 
   Her body is a mass of treasure: she is a 
  reanimated skeleton wrapped in a thick hide 
  of tanned leather made from raptor sacrifices, 
  and her feathers are taken from parrots, quetzal 
  birds, and hummingbirds. Her eyes are two 
  shining jade orbs, while her teeth and claws are 
  obsidian. She wears golden chain and disc jewelry. 
  Disassembled, the tyrannosaur’s body is worth 
  14,000 gp. 
   If approached peacefully and offered food 
  (either real meat or clay “food” from the market), 
  she may be enticed to assist the party instead of 
  attacking them; this requires a successful DC 15 
  Wisdom (Animal Handling) check. She will follow 
  them around and attack anyone she is directed to 
  attack. 
  10. Temple of the Feathered Lords 
  If the characters approach the outside of this 
  building, read:
  The massive pyramid before you sports painted 
  friezes of feathered dinosaurs and snakes. Though 
  the paint is as bright and fresh as the day the temple 
  was built, it is clear that many of the carvings have 
  been defaced. The repeated figures of the Feathered 
  Lords have their faces chiseled out, while the images 
  of Quetzalcoatl and his serpentine attendants are all 
  eyeless and fangless. The stone doors at its zenith 
  are shut, and the images carved into them glow with 
  eerie black light.
  Atop the stone stairs, the doors of the pyramid 
  are locked with a key held by high priestess 
  Coaxoch (Area 6). As an action, a character may 
  EN World EN5IDER | Día de los Dinosaurios Muertos
  
  Día de los Dinosaurios Muertos | EN World EN5IDER
  attempt a DC 28 Strength (Athletics) check to 
  force the door. Regardless of the check’s success 
  or failure, the evil magic that holds the door shut 
  deals 2d6 necrotic damage every time a creature 
  attempts to open it without the key. Casting knock 
  opens the door, but the noise alerts Miquiztlicoatl 
  inside, attracts the ball players in Area 5 and the 
  tyrannosaurus rex zombie from Area 9, and the 
  door’s evil magic deals the caster 8d6 necrotic 
  damage. 
   As the characters approach the heart of the 
  pyramid, read:
  The passage inside the pyramid spirals downward and 
  is lined with carvings and murals. There are numerous 
  places where images of the Feathered Lords are 
  replaced with a newer carving of a male raptor in a 
  huge headdress—the text beneath the image reads 
  “Miquiztlicoatl the Death Serpent.” Rows of murals 
  depict Miquiztlicoatl killing the former emperor, his 
  raptor armies slaughtering unflatteringly depicted 
  humanoids, and finally showing the Death Serpent 
  holding standing atop an obsidian altar while his 
  raptor armies march upon the heavens, set to kill the 
  gods themselves. At the end of the hallway, you see 
  the entrance to the heart of the pyramid.
  The heart of the pyramid used to be the Temple of 
  the Feathered Lords, but is now Miquiztlicoatl’s 
  tomb and throne room. The room is a 40-foot cube 
  and is dimly-lit by the black glow of the Stone 
  of the Inverted Sun, which sits on a raised plinth 
  in the center of the room. If the characters arrive 
  on the Day of the Dead, Miquiztlicoatl stands 
  at the center, intoning an incantation over the 
  Stone, accompanied by 2 raptor mummies. If they 
  arrive here after the Day of the Dead has ended, 
  Miquiztlicoatl has a 50% chance of being here and 
  a 50% chance of celebrating his glorious victory 
  with his court of nobles in Area 6, though his 
  mummy guards remain here. 
   The Stone of the Inverted Sun can be destroyed by 
  dealing 50 points of bludgeoning or sonic damage 
  to it. Once destroyed, it releases 360 trapped 
  souls, one from each year of Miquiztlicoatl’s rule. 
  If Miquiztlicoatl is still alive, these souls prevent 
  him from using his legendary actions or casting 
  spells. When Miquiztlicoatl is defeated, they also 
  lead the characters to his heart’s resting place; an 
  obsidian box in a secret alcove beneath the plinth 
  holding the Stone of the Inverted Sun. 
   If the stone is broken after the dawn of the day 
  after the adventure begins, Miquiztlicoatl and all 
  the other undead dinosaurs become immediately 
  inert. Miquiztlicoatl can then be simply destroyed 
  then and there. The souls direct characters to his 
  heart, so he may be permanently destroyed. 
  Aftermath
  If the Stone of the Inverted Sun is destroyed before 
  sunrise the next day, they simply stop and return 
  to the mud below. If it is later, they collapse 
  where they stand, lifeless and inert. In either 
  case, once the characters return to the city, they 
  have the gratitude of everyone in New Atzlán. If 
  Miquiztlicoatl was destroyed before the end of 
  the Day of the Dead, the celebration cautiously 
  resumes. If the sun has risen on a new day, then 
  the festival is joyfully rekindled, albeit without 
  the calacas’ company. 
   From here, the authorities of New Atzlan may 
  have investigations to conduct in other areas of 
  the Undercity, and who better to help than the 
  heroes who slew Miquitztlicoatl? Adventure 
  awaits! 
  Día de los Dinosaurios Muertos | EN World EN5IDER
  
  EN World EN5IDER | Día de los Dinosaurios Muertos
  Monster Index
  Undead Dinosaurs
  Skeleton and zombie versions of certain dinosaurs 
  appear throughout this adventure. Skeleton and 
  zombie versions of these dinosaurs can be created 
  by applying the skeleton template or zombie 
  template* to the base creature, with one exception: 
  skeletons and calacas animated by the magic of 
  the Day of the Dead do not suffer a penalty to 
  Charisma and may speak all languages they 
  knew in life, and calacas are constructs instead of 
  undead.
   Velociraptors, raptor priests, raptor mummies, 
  and Miquiztlicoatl himself can be found in this 
  section.
   Velociraptors are small, about the size of a mid-
  sized dog. While they can be up to 7 feet long 
  including their long tails, they are only about 2 
  feet tall. They are pack hunters and extremely 
  quick for their size. Velociraptors of the lost 
  Feathered Kingdom kept their feathers well 
  preened, and often wove the bright feathers of 
  other animals, such as parrots or quetzals, into 
  their own. 
   Velociraptors are the only intelligent dinosaurs 
  in the Feathered Kingdom. Other dinosaurs, 
  like ankylosaurs, triceratops, and tyrannosaurs 
  possess bestial intelligence, and are treated as pets, 
  steeds, or beasts of burden. To create a normal 
  velociraptor for your own game, simply change its 
  Intelligence score to 2. 
  *  Cedar Collins, Template of Horrors, EN World EN5ider,  
  https://www.patreon.com/posts/template-of-3538942
  Intelligent Velociraptor
  XP 600 
  CR 2
  Neutral Small beast (awakened)
  Initiative: +3
  DEFENSE
  AC: 15 (natural armor)
  hp: 26 (4d8 + 8)
  OFFENSE
  Speed: 40 ft.
  Pounce: If the velociraptor moves at least 20 feet 
  straight toward a creature and then hits it with a claw 
  attack on the same turn, that target must succeed on 
  a DC 13 Strength saving throw or be knocked prone. 
  If the target is prone, the velociraptor can make one 
  bite attack against it as a bonus action. 
  Melee Attack—Bite: Melee Weapon Attack: +6 to hit, 
  reach 5 ft., one target. Hit: 15 (2d10 + 4) piercing 
  damage.
  Melee Attack—Claw: Melee Weapon Attack: +6 to hit, 
  reach 5 ft., one target. Hit: 8 (1d8 + 4) slashing damage
  STATISTICS
  Str  13 (+1) 
  Dex 17 (+3) 
  Con 15 (+2)
  Int 11 (+0) 
  Wis 12 (+1) 
  Cha 10 (+0)
  Skills: Athletics +3, Acrobatics +5
  Languages: Draconic
  Senses: passive Perception 11
  ECOLOGY
  Environment: Warm Forests
  Organization: Solitary, Pair, or Pack (3–6)
   
  These ancient velociraptors were as intelligent as 
  average humans. They can be found sometimes with 
  armor, weapons, and class levels. They call them-
  selves alternately Swift Hunters or Feather People in 
  Draconic. 
  EN World EN5IDER | Día de los Dinosaurios Muertos
  
  Día de los Dinosaurios Muertos | EN World EN5IDER
  Raptor Priest
  As a velociraptor zombie, except: 
  AC: 13 (chain shirt)
  Skills: Medicine +5, Persuasion +3, Religion +2
  Ability Scores: Wis 16 (+3), Cha 13 (+1)
  Languages: Draconic, Infernal
  Senses: Passive Perception 13
  Traits: Divine Eminence and Spellcasting, as a priest 
  NPC. 
  Raptor Mummy
  XP 700 
  CR 3
  As an intelligent velociraptor, except as above and: 
  Lawful Evil Small undead
  AC: 11 (natural armor)
  hp: 44 (9d8 + 18)
  Saving Throws: Wis +2
  Vulnerabilities: fire
  Resistances: bludgeoning, piercing, and slashing from 
  nonmagical weapons
  Immunities: necrotic, poison
  Condition Immunities: charmed, exhaustion, fright-
  ened, paralyzed, poisoned
  Melee Attack—Multiattack: The mummy can use its 
  Dreadful Glare and makes one attack with either its 
  claws or bite. Melee attacks add 10 (3d6) necrotic 
  damage. 
  Ability Scores: Str 16 (+1) Cha 12 (+1)
  Senses: darkvision 60 ft.
  TrAITS
  Curse of Itzpapalotl: Targets struck by either the 
  mummy’s claws or bite take an extra 10 (3d6) necrotic 
  damage and must succeed on a DC 12 Constitution 
  saving throw or suffer the Curse of Itzpapalotl. The 
  cursed target’s blood is filled with tiny obsidian 
  larvae that prevent it from regaining hit points, and 
  its hit point maximum decreases by 10 (3d6) for every 
  24 hours that elapse.
   
  If the curse reduces the target’s hit point maximum 
  to 0, the target dies. 1d4 rounds later, its body ex-
  plodes into a swarm of obsidian butterflies (as insect 
  swarm) that completely eviscerate the corpse. The 
  curse lasts until removed by the remove curse spell or 
  other magic.
  Dreadful Glare: As mummy.
  Miquiztlicoatl the Death Serpent
  XP 15,000 
  CR 16
  Lawful Evil Small undead
  Initiative: +2
  DEFENSE
  AC: 17 (natural armor)
  hp: 97 (13d8 + 39)
  Saving Throws: Con +8, Int +5, Wis +9, Cha +8
  Skills: History +5, Religion +5
  Vulnerabilities: fire
  Immunities: necrotic, poison; bludgeoning, piercing, 
  and slashing from nonmagical weapons
  Condition Immunities: charmed, exhaustion, fright-
  ened, paralyzed, poison
  OFFENSE
  Speed: 40 ft.
  Pounce: If Miquiztlicoatl moves at least 20 feet straight 
  toward a creature and then hits it with a claw attack 
  on the same turn, that target must succeed on a DC 
  13 Strength saving throw or be knocked prone. If 
  the target is prone, Miquiztlicoatl can make one bite 
  attack against it as a bonus action. 
  Melee Attack—Multiattack: Miquiztlicoatl uses his 
  Dreadful Glare and makes one claw or bite attack.
  Melee Attack—Bite: Melee Weapon Attack: +9 to hit, 
  reach 5 ft., one target. Hit: 15 (2d10 + 4) piercing 
  damage plus 21 (6d6) necrotic damage and Curse of 
  Itzpapalotl.
  Melee Attack—Claw: Melee Weapon Attack: +9 to 
  hit, reach 5 ft., one target. Hit: 11 (2d6 + 4) slashing 
  damage plus 21 (6d6) necrotic damage and Curse of 
  Itzpapalotl.
  STATISTICS
  Str  18 (+4) 
  Dex 17 (+3) 
  Con 17 (+3)
  Int 11 (+0) 
  Wis 18 (+4) 
  Cha 16 (+3)
  Languages: Draconic, Primordial, Infernal, Sylvan
  Senses: darkvision 60 ft., passive Perception 14
  TrAITS
  Magic Resistance: As mummy lord.
  Rejuvenation: As mummy lord. Miquiztlicoatl’s heart 
  is in a trapped secret chamber in the plinth that holds 
  the Stone of the Inverted Sun. 
  Día de los Dinosaurios Muertos | EN World EN5IDER
  
  EN World EN5IDER | Día de los Dinosaurios Muertos
  Spellcasting: Miquiztlicoatl is a 10th-level spellcaster. 
  His spellcasting ability is Wisdom (spell save DC 17, +9 
  to hit with spell attacks). He has the following cleric 
  spells prepared:
  Cantrips (at will): sacred flame, thaumaturgy
  1st Level (4 slots): command, ray of sickness, 
  shield of faith
  2nd Level (3 slots): blindness/deafness, hold person, 
  silence 
  3rd level (3 slots): animate dead, dispel magic
  4th level (3 slots): divination, guardian of faith
  5th level (2 slots): contagion, insect plague
  6th level (1 slot): harm
  Curse of Itzpapalotl: Targets struck by either Miquiz-
  tlicoatl’s claws or bite take an extra 21 (6d6) necrotic 
  damage (already included in his attacks) and must 
  succeed on a DC 16 Constitution saving throw or 
  suffer the Curse of Itzpapalotl. The cursed target’s 
  blood is filled with tiny obsidian larvae that prevent it 
  from regaining hit points, and its hit point maximum 
  decreases by 10 (3d6) for every 24 hours that elapse.
   
  If the curse reduces the target’s hit point maximum 
  to 0, the target dies. 1d4 rounds later, its body ex-
  plodes into a swarm of obsidian butterflies (as insect 
  swarm) that completely eviscerate the corpse. The 
  curse lasts until removed by the remove curse spell or 
  other magic.
  Dreadful Glare: As mummy lord.
   LEGENDArY ACTIONS
  Miquiztlicoatl can take 3 legendary actions, choosing 
  from the options below. Only one legendary action 
  option can be used at a time and only at the end of 
  another creature’s turn. Miquiztlicoatl regains spent 
  legendary actions at the start of his turn.
  Attack: Miquiztlicoatl makes one bite or claw attack, 
  or uses his Dreadful Glare.
  Cloud of Butterflies: A blinding cloud of colorful but-
  terflies surrounds Miquiztlicoatl. Each creature within 
  5 feet of him must succeed on a DC 16 Constitution 
  saving throw or be blinded until the end of their next 
  turn. 
  Defiling Roar (Costs 2 actions): Miquiztlicoatl un-
  leashes a blood-curdling screech. Each living creature 
  within 10 feet of Miquiztlicoatl that can hear him must 
  succeed on a DC 16 Constitution save or be stunned 
  until the end of Miquiztlicoatl’s next turn. 
  Summon Undead (costs 2 actions): Miquiztlicoatl 
  invokes the power of the Stone of the Inverted Sun and 
  summons an undead creature as if he had spent his 
  action to do so (see Stone of the Inverted Sun sidebar 
  on the next page).
  Hummingbird Swarm (Costs 2 actions): Miquiztli-
  coatl transforms into a swarm of brightly colored 
  hummingbirds, moves up to 60 feet, and reverts to 
  his normal form. While in this form, he is immune to 
  all damage, and he cannot be grappled, petrified, 
  knocked prone, restrained, or stunned. Equipment 
  worn or carried by Miquiztlicoatl remains in his 
  possession. 
  ECOLOGY
  Environment: Swamp
  Organization: Solitary
   
  Although technically Miquiztlicoatl is in his lair, he 
  does not take lair actions, and his regional effects are 
  replaced by the effects of the Stone of the Inverted Sun. 
  See the sidebar on the next page.
  EN World EN5IDER | Día de los Dinosaurios Muertos
  
  Día de los Dinosaurios Muertos | EN World EN5IDER
  Stone of the Inverted Sun
  Wondrous item, artifact (requires attunement by a 
  creature of evil alignment)
   The Stone of the Inverted Sun is a 4 foot wide, 7 foot 
  long, 2 foot tall slab of polished black obsidian. It is 
  extremely heavy and difficult to move, but is also 
  fragile and made of volcanic glass. The surface is 
  carved with images of undead velociraptors worship-
  ing a black sun. 
   Once per year, if a sapient being is killed and their 
  still-beating heart placed on the sun carving in the 
  center of the altar, their blood is pumped into the 
  grooves and their soul is trapped inside. As an action, 
  the attuned creature may destroy a soul trapped in 
  the altar to create undead. Created undead appear 
  within 50 feet (500 feet if 360 souls are trapped 
  within) and are incapacitated until the beginning of 
  their next turn. What undead are created depends on 
  the Hit Dice of the creature whose soul is used:
   
  ✦ 1–4 HD: one skeleton or zombie per soul (as 
  animate dead)
   
  ✦ 4–5 HD: three to five skeletons or zombies per soul 
  (as animate dead)
   
  ✦ 6 HD: one ghoul (as create undead)
   
  ✦ 7 HD: one ghast (as create undead)
   
  ✦ 8 HD: one wight (as create undead)
   
  ✦ 9 HD: one mummy (as create undead)
  At the beginning of this adventure, the Stone of the 
  Inverted Sun contains the souls of 300 creatures with 
  1–4 Hit Dice, 55 of creatures with 4–5 Hit Dice, two 
  with 6 HD, one with 7 HD, one with 8 HD, and one 
  with 9 HD.
   Once the Stone contains 360 souls, it projects an 
  aura of necrotic energy over a 500 square foot radius 
  centered on itself. This energy has the following 
  effects: 
   
  ✦ Spells of the Necromancy school are Extended, as 
  the sorcerer metamagic ability. 
   
  ✦ Calacas and undead within the zone are perma-
  nent, sapient, retain their ability to speak, and do 
  not become inanimate after the Day of the Dead 
  is over.
   
  ✦ Undead with sunlight vulnerability lose their 
  vulnerability.
  Día de los Dinosaurios Muertos | EN World EN5IDER
  
SOURCE: textdata/thevault/Dungeons & Dragons [multi]/5th Edition (5e)/3rd Party/EN World EN5ider/EN5ider 043 - Dia De Los Dinosaurios Muertos.pdf