3 words: Flying Ender Crystal.
Achtung: Minifiziere den Command um Probleme zu vermeiden :)
For boss battle!
1 command... again... (3rd 1 command creation!)
EXTREME boss battle!
CUSTOM ENCHANTMENT!
Pet ENDER DRAGON!!!!!
Wither Storm Boss in ONE COMMAND
HEROBRINE COMMAND
HEROBRINE BOSS BATTLE (See YouTube for details)