shulker
Light purple, box-shaped hostile mob in Minecraft. Only spawns in End Cities located in The End dimension. It fires specialized bullets that can cause an entity to experience levitation for a few seconds. Similar to the ghast fireball, players can deflect that projectile. Has an ability to teleport.
Once the shulker completely closes its shell, it becomes almost invulnerable to damage and can deflect arrows.
Shulkers have chance to drop their own shell(s), vital components to craft shulker boxes.