This will summon in a cool WitherDragon!
Note: Minify the command to avoid issues :)
Good but also Bad Potion
Sword of the other factors
XP Orb
Super Sword of Awesomeness!
Pet ENDER DRAGON!!!!!
Wither Storm Boss in ONE COMMAND
HEROBRINE COMMAND
HEROBRINE BOSS BATTLE (See YouTube for details)