3 Epic BOSSES!
Note: Minify the command to avoid issues :)
Magical Particles 1
Steed 2: Carrier Steed
Automatic Aggressive (And Passive) Mob Killer! Another One Command Creation!
Undead General!
Pet ENDER DRAGON!!!!!
Wither Storm Boss in ONE COMMAND
HEROBRINE COMMAND
HEROBRINE BOSS BATTLE (See YouTube for details)