TEXT: Deck of
  Monster Summoning
  
  "Whats that you got there?" Stane asked Cari as he was going through one of the pockets of a Orc band they just came across dead
  on the road. Bodies ripped and torn to shreds, some look burned quite badly but there is no sign of who or what attacked them.
  "Looks like a deck of cards," answered Cari. "it appears to have different creatures on it and some words, here have a look"
  That looks like elvish answered Stane as he takes a card, it was a 4 of hearts, it has a extremely beautiful woman on it. Stane
  stammers, his elvish not that great, He manages to speak the word, translated to common it says Succubus. He puts the card back
  and goes to take another one from the middle of the deck and gets the same card. "What the...did you see that Cari? I put the card
  back on the top and took another one but got the same card." Cari goes to take the card from him and drops it.
  A swirl of mist comes up from the card, the the beautiful woman from the card appears right before their eye's. Bat like wings
  stretch out from her back and she smiles. "Hello boys, lets have some fun," she says and suddenly Cari pulls out his dagger and
  stabs Stane in the gut as he staggers back and falls to the ground. Cari looks down on his friend with a look of hate as he stabs
  again and again, unable to control his actions, she was his and wasn't going to share with anyone even his best friend. Stane cries
  out in pain and tries to stop him as he falls to the ground too weak from all the stab wounds.
  "Finish him my love and I will be yours forever," the succubus says to Cari and he looks down at Stane one last time as he
  finishes him off and just as quickly as the feeling came over him it was gone and he stood over his best friend, lying dead on the
  ground before him, his knife and hands covered in blood. Realizing what he had done he immediately attacks the succubus...
  T
  he Deck of Monster Summoning is a deck of
  cards with various monsters on it, on each
  card a creature inside with elvish writing.
  Speaking the words will summon the monster
  and they will attack anything. Once card is
  drawn the only way to get a different card is to
  speak the word, they cannot leave any part of
  the deck laying around they will find that the deck will always
  be complete. Cards are not expended on use and will re
  appear in the deck after the card is used.
  Method 1: Deck of Cards
  Using a standard deck of playing cards including the jokers,
  draw a card and reference the table, the card you get is the
  monster summoned.
  Method 2: Dice
  Using dice roll 1D4 to find out which suit and then roll 2d8-1
  to get the card face.
  The jokers (Wild Card/Die)
  Cards
  If you draw one you get to draw another card but leave that
  joker out and the monster summoned is x2 and if you draw
  the 2nd joker you draw again (leaving the second joker out)
  and the monster summoned is x3.
  Dice
  If using the dice method after rolling the first joker the
  second roll would be -2 and the monster summoned is x2 if
  you get the joker again the third roll would be -3 and monster
  summoned x3. Note that anything below a 1 would be treated
  as 1 (ace). 
  Cards Dice Hearts (1)
  Diamonds
  (2)
  Clubs (3) Spades (4)
  Ace
  1
  Stone
  Golem
  Young Red
  Dragon
  Death
  Slaad
  Deva
  2
  2
  Assassin
  Cloaker
  Drow
  Priestess
  Frost
  Giant
  3
  3
  Mage
  Medusa
  Drider
  Cyclops
  4
  4
  Succubus
  Ettin
  Ghost
  Banshee
  5
  5
  Rug of
  Smothering
  Wererat
  Ogre
  Ghast
  6
  6
  Giant Frog
  Goblin
  Zombie
  Swarm of
  Bats
  7
  7
  Bandits
  Giant Rats
  Tribal
  Warriors
  Kobolds
  8
  8
  Gnolls
  Hobgoblins
  Orcs
  Swarm of
  Insects
  9
  9
  Animated
  Armor
  Bugbears Dire Wolf
  Ghouls
  10
  10
  Knight
  Owlbear
  Werewolf
  Basilisk
  Jack
  11
  Drow Elite
  Warrior
  Hill Giant
  Fire
  Elemental
  Zombie
  Beholder
  Queen 12 Drow Mage Mind Flayer
  Stone
  Giant
  Giant Ape
  King
  13
  Fire Giant Cloud Giant
  Treant
  Young
  Silver
  Dragon
  Joker
  14
  Joker
  15
  Deck of
  Monster Summoning
  This is unofficial Fan Content permitted under the Fan Content Policy. Not approved/endorsed by Wizards. Portions of the materials used
  are property of Wizards of the Coast. ©Wizards of the Coast LLC.
  
  DUNGEONS & DRAGONS, D&D, Wizards of the Coast, Forgotten Realms, Ravenloft, Eberron, the dragon ampersand, Ravnica
  and all other Wizards of the Coast product names, and their respective logos are trademarks of Wizards of the Coast in the USA
  and other countries.
  This work contains material that is copyright Wizards of the Coast and/or other authors. Such material is used with permission
  under the Community Content Agreement for Dungeon Masters Guild.
  All other original material in this work is copyright 2019 by Chris Denyer and published under the Community Content
  Agreement for Dungeon Masters Guild.
  Alternative Rules
  You could have the number of enemies scale
  with the parties overall strength.
  Monsters that are summoned could be either
  new manifestations of that monster which
  disappear when killed
  Alternatively they could be summoned from
  somewhere else. When they die the magical
  effect ends and they are transported back to
  their original location. Sentient creatures will
  remember who summoned them.
  You can choose whether the creatures attack
  PC's or are under control of them.
  Jokers
  Alternative to method 1 and 2 jokers, you could
  have them draw 2 or 3 times or re-roll 2 or 3
  times instead of multiplying and get different
  creatures instead of same creature x2 or x3.
  This is unofficial Fan Content permitted under the Fan Content Policy. Not approved/endorsed by Wizards. Portions of the materials used
  are property of Wizards of the Coast. ©Wizards of the Coast LLC.
  
SOURCE: textdata/thevault/Dungeons & Dragons [multi]/5th Edition (5e)/3rd Party/DMsGuild/Deck of Summoning.pdf