The Ender Dragon morph required a special ritual. You had to not only kill the Ender Dragon but also craft a "Dragon Heart" using Nether Stars and Dragon Breath. This made obtaining the morph a true endgame achievement.
– Players could transform into almost any entity: passive mobs (sheep, cows), hostile mobs (zombies, creepers), bosses (ender dragon, wither), and even ambient mobs (bat, squid). morph into anything addon by skupkamcaddon 2021
: Unlike limited morph mods, this addon allows you to transform into virtually every entity in the game, including passive animals, hostile monsters, and even boss mobs. The Ender Dragon morph required a special ritual