Bring Milk, Because Nyan Cat Will Curse You If You Get Near It.
Note: Minify the command to avoid issues :)
Nyan Cat In One Command!
Wither Storm (Next To Invincible)
Magma Giant (Easy)
Hoopa Minion
Pet ENDER DRAGON!!!!!
Wither Storm Boss in ONE COMMAND
HEROBRINE COMMAND
HEROBRINE BOSS BATTLE (See YouTube for details)