This is the Golden Calvary from Ore Army.
Note: Minify the command to avoid issues :)
Slenderman Talk Commands To Creep Out Your Friends
Splash Potion of Mining Fatigue
Villager Charger Soldier
Essentials Booklet
Pet ENDER DRAGON!!!!!
Wither Storm Boss in ONE COMMAND
HEROBRINE COMMAND
HEROBRINE BOSS BATTLE (See YouTube for details)