Note: Minify the command to avoid issues :)
Summon DanTDM!!!!!
Potion of Regeneration That Lasts For an Hour!!!!
A Wither Boss Spawner!
Get a Zombie Pigman Skull!
Pet ENDER DRAGON!!!!!
Wither Storm Boss in ONE COMMAND
HEROBRINE COMMAND
HEROBRINE BOSS BATTLE (See YouTube for details)