Rampaging Vidicator (attacks all mobs ex. evokers)
Note: Minify the command to avoid issues :)
How to deal with your new Minecraft launcher
Binoculars simple command
A bunch of awesome commands part 2
TnT Wither
Pet ENDER DRAGON!!!!!
Wither Storm Boss in ONE COMMAND
HEROBRINE COMMAND
HEROBRINE BOSS BATTLE (See YouTube for details)