This command summons a giant end/nether flying stack of mobs:
Note: Minify the command to avoid issues :)
STUFF CHEST
DOUBLE GOD SWORD
HALF BEDS!!!
å∫ç∂´ƒ©˙ˆ∆˚¬µ˜øπœ®ß†¨√∑≈¥Ω (YOUTUBE HEADS)
Pet ENDER DRAGON!!!!!
Wither Storm Boss in ONE COMMAND
HEROBRINE COMMAND
HEROBRINE BOSS BATTLE (See YouTube for details)