Note: Minify the command to avoid issues :)
Ender Zombie cool mob
Ender King Boss Battle (the other Ender King didn't come out right but this one did)
Flying Chicken (literaly)
Super Lucky Potion in vanilla minecraft
Pet ENDER DRAGON!!!!!
Wither Storm Boss in ONE COMMAND
HEROBRINE COMMAND
HEROBRINE BOSS BATTLE (See YouTube for details)