New End Boss

lego 21242 have a end arena but is like a new boss

if mc have a end update, Why don't they add this?

It would work:
First you would have to destroy the 2 end crystals next to him since they would work as a shield for him, there would be pressure plates in the center that when pressed would open a lava pit where you can die, and also from time to time he can shoot balls of fire that returning them would be the way to attack him, by lowering half of his life his phase 2 would begin where he shoots the fireballs faster, the end crystals would reappear in a cage to make it more difficult to break them, endermans will also begin to spawn and a shulker will appear on the dragon's head and will start shooting shulker bullets at you with which you will rise to hurt its eyes (each eye is equivalent to half of what remains of the dragon's life)
and upon defeating it it would release you: The heart of the end which when equipped in the secondary hand would serve to fly for a brief moment of 1:00 when time runs out you will fall to the ground, this heart could be leveled up on an anvil by adding it with another end heart (this boss spawns in 3 places in the end and can be respawned with 2 end crystals) every time you add an end heart it will add to the duration 0:50 seconds, the end heart also has a duration of What you will have to enchant it on an anvil with repair and have an experience farm (the duration would be 50 uses) (when added with another heart its duration is regenerated)