VERY WEAK!
Note: Minify the command to avoid issues :)
Notch has added a new mob to minecraft:Tiger
More pickaxes in one command
SkeletalMage 1.11.2
Zombie Herobrine Boss (2 COMMANDS)
Pet ENDER DRAGON!!!!!
Wither Storm Boss in ONE COMMAND
HEROBRINE COMMAND
HEROBRINE BOSS BATTLE (See YouTube for details)