the purpose of this is obvious due to the name.
Achtung: Minifiziere den Command um Probleme zu vermeiden :)
Creeper drops a command block
Booster and Berserk
Cake Head
Axes Charge!
Pet ENDER DRAGON!!!!!
Wither Storm Boss in ONE COMMAND
HEROBRINE COMMAND
HEROBRINE BOSS BATTLE (See YouTube for details)