It's smarrt!
Note: Minify the command to avoid issues :)
Ancient Wither Skull!
Largehead Ghoul, An Add-On For The Battle Mini-Game!
The Killer ArmorStand, a Special Command!
Undead General!
Pet ENDER DRAGON!!!!!
Wither Storm Boss in ONE COMMAND
HEROBRINE COMMAND
HEROBRINE BOSS BATTLE (See YouTube for details)