<Tr> <Td colspan="7"> Emrys arrives at Camlann , and uses his magic to knock Morgana unconscious , order Aithusa to leave , and strike down many of Morgana 's men . The battle culminates in Mordred dealing Arthur a fatal wound , only to receive one in return . While tending to Arthur , Merlin confesses that he is a sorcerer . Arthur 's only chance of survival is the powers of the Sidhe of Avalon , so Merlin sets out to reach the lake . In Camelot , Morgana 's spy is discovered and hanged , leading Gwaine , along with Percival , to hunt down Morgana . However , she overpowers them and magically tortures Gwaine into confessing Arthur 's whereabouts ; Gwaine passes out shortly afterwards in Percival 's arms . Morgana catches up with Merlin and Arthur and drives their horses away , but she is killed by Merlin wielding Excalibur . Without horses , Merlin can not get Arthur to the Isle in time , and the King of Camelot dies in Merlin 's arms , after thanking his friend for everything he has done . Merlin beseeches the Great Dragon to carry Arthur 's body to the Isle , and the Dragon does so . As Merlin desperately tries to drag Arthur 's body to the lake , the Great Dragon tells Merlin he has succeeded , and that as the Once and Future King , Arthur will rise again in Albion 's greatest hour of need . As the Dragon departs , Merlin flings Excalibur into the waters of Avalon and sends Arthur 's body after it . Guinevere ascends the throne of Camelot . In the present day , it seems an immortal Merlin still waits for the Once and Future King to rise again . </Td> </Tr>
why did arthur die at the end of merlin
Merlin can not get Arthur to the Isle in time