Get a Giant Slime in Minecraft.
Note: Minify the command to avoid issues :)
Agatha the friendly Creeper from Stampylongnose
Fireball Nuke
Saturation Potion
Bunny with a Hat
Pet ENDER DRAGON!!!!!
Wither Storm Boss in ONE COMMAND
HEROBRINE COMMAND
HEROBRINE BOSS BATTLE (See YouTube for details)