The most annoying thing ever!(Great for trolling!)
Note: Minify the command to avoid issues :)
Helmet of Healing
U MAD BRO?
U MAD BRO? 2.0
Mob Spawner!!(Troll your friends!)
Pet ENDER DRAGON!!!!!
Wither Storm Boss in ONE COMMAND
HEROBRINE COMMAND
HEROBRINE BOSS BATTLE (See YouTube for details)