Achtung: Minifiziere den Command um Probleme zu vermeiden :)
Ender Skeleton Boss
How to use /summon {MOB} riding {MOB}
NUCLEAR CREEPER
Cool Blocks like nether portal block,still water,mini TNT and more =) (not tested)
Pet ENDER DRAGON!!!!!
Wither Storm Boss in ONE COMMAND
HEROBRINE COMMAND
HEROBRINE BOSS BATTLE (See YouTube for details)