Just Use This To Summon Herobrine.
Note: Minify the command to avoid issues :)
MOST OP SWORD!!!
Mobs In A Book -- WORK IN PROGRESS
Frozen Ender Dragon!
OMG FLYING SQUID
Pet ENDER DRAGON!!!!!
Wither Storm Boss in ONE COMMAND
HEROBRINE COMMAND
HEROBRINE BOSS BATTLE (See YouTube for details)