Ender - an end boss mob

As Mace was added which is a overpowered weapon , there should also be a overpowered boss mob , because now every other boss/powerful mob like Ender Dragon , Wither , Warden ,etc are very weak before the mace .They all can be defeated very easily with mace . There should be a mob like - The Ender , an end boss mob who will protect the end city . He will have health as much as Warden .The eye of ender will always follow the Ender ( That's how we will be able to find him , and it will make sense that where is the eye of ender going) . But fighting with him won't be easy as finding him . He will have many eyes and if you will look directly or indirectly into his eyes , you will get blindness . As he will be an end mob, he will also be able to teleport And he will be incredibly fast (so he can't be hit very easily ). He will be able to fly . He will also throw his projectiles at you and if you will go close he will do melee attack which will give you knockback upto 10 blocks . Just like the Ender dragon , he will also get health from the end crystals , so you have to break them before fighting . After fighting he should drop end vault key which can be used to open end vault in the end ship which should have 1 - 2 % chance of dropping elytra (Now it would not be very easy to get elytra ).