Ender Lair

Ender Lairs are structures inside the end, made of End Stone Brick and they house Shulkers. Unlike End Cities, however, they are underground. Deep below, there is a horde of Endermen that you must fight. A few chests can spawn, with End City loot. Sometimes, there's a more hidden room that houses a red-eyed Enderman with six limbs that can summon duplicates, like an Illusioner. Attack the real one, and it will take damage. If you attack a fake, however, it will attack you and deal 3 damage. If it kills you, all items in your inventory that contain Iron will break. (If you have keep inventory on.) Killing it will reward you with Eyes of Ender, and a reusable Ender Pearl.