FINNALLY!!!
Note: Minify the command to avoid issues :)
GIANT TNT NO MODS!!!! (that explode the world with lag actually)
Wither Skeleton King
HEROBRINE SPAWNER IN ONE COMMAND
GUNS NO MOD!!!!
Pet ENDER DRAGON!!!!!
Wither Storm Boss in ONE COMMAND
HEROBRINE COMMAND
HEROBRINE BOSS BATTLE (See YouTube for details)