It spawns withers
Note: Minify the command to avoid issues :)
Ancient Sword of the Dark Forest
Skeleton Runner
OP Diamond Chestplate ☻☺
Lvl 20 Wither Skeleton Spawner
Pet ENDER DRAGON!!!!!
Wither Storm Boss in ONE COMMAND
HEROBRINE COMMAND
HEROBRINE BOSS BATTLE (See YouTube for details)