Note: Minify the command to avoid issues :)
Lucky Potion with Infininite time limit
OP Chestplate (you can fly a.k.a glide with this thing)
Summon The EnderDragon
OP Crown
Pet ENDER DRAGON!!!!!
Wither Storm Boss in ONE COMMAND
HEROBRINE COMMAND
HEROBRINE BOSS BATTLE (See YouTube for details)