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