This is a command to get a enderman riding a horse with diamond armour
Note: Minify the command to avoid issues :)
Potion of Luckyness
Stray jockey
Mob Statues command for ANY mob
OP Nether star
Pet ENDER DRAGON!!!!!
Wither Storm Boss in ONE COMMAND
HEROBRINE COMMAND
HEROBRINE BOSS BATTLE (See YouTube for details)