Also works with magma cubes -
/summon LavaSlime ~ ~ ~ {Size:20}
Note: Minify the command to avoid issues :)
Difficulty IMPOSSIBLE!!!
BAD_BAD_BAD POTION!!!!!!!! BAD!!!!!!!
Furniture in one commnd!
Super Crazy Armor!
Pet ENDER DRAGON!!!!!
Wither Storm Boss in ONE COMMAND
HEROBRINE COMMAND
HEROBRINE BOSS BATTLE (See YouTube for details)