Just Use This To Summon Herobrine.
Note: Minify the command to avoid issues :)
Summon Herobrine (This Command Not Tested Yet)
Mobs In A Book -- WORK IN PROGRESS
MOST OP SWORD!!!
Frozen Ender Dragon!
Pet ENDER DRAGON!!!!!
Wither Storm Boss in ONE COMMAND
HEROBRINE COMMAND
HEROBRINE BOSS BATTLE (See YouTube for details)