"End turret"

I'm not quite sure if this counts as a mob but a end crystal first that would float in place and shoot hostile mobs would. be cool

So basically how you acquire it is you take a end crystal you crafted and surround it with gold and shulker shells to make a spawnable "turret" that can be placed on obsidian only and would attack mobs by launching a golden spike at its enemies and would prioritize mobs with more health instead of the one it first saw

It would probably have only one health point due to how it doesn't move from its position 

It would do about 10-15 damage per hit but would be slow about attacking

The "turret" would take up a space equal to the player when crouching or 1.5 blocks

It would look like a end crystal with a shulker base instead of fire and be more purple in general