Dragon Fireball

The ender dragon is a giant flying hostile boss mob found when first entering the End. It is the largest naturally spawning mob in the game. Its attacks involve charging at the player and shooting fireballs that create damaging effect clouds. The ender dragon can be re-summoned by placing four End crystals around the exit portal.
Defeating the ender dragon the first time activates the exit portal which allows safe return to the Overworld. Each time it is defeated, an End gateway is created on the outskirts of the central island which can be used to teleport to the outer End islands.