This adds a skeleton with a bow that one shoot kills anything!
Note: Minify the command to avoid issues :)
Mob Spawner Head
THCommandBlocks' War Weapons
The one hit kill OP axe!
Super Shovel Spade Thingy
Pet ENDER DRAGON!!!!!
Wither Storm Boss in ONE COMMAND
HEROBRINE COMMAND
HEROBRINE BOSS BATTLE (See YouTube for details)