This adds a skeleton with a bow that one shoot kills anything!
Note: Minify the command to avoid issues :)
My Sunglass Head
The Unbelievable Sword of the Ultimate DOOM!
THCommandBlocks' War Weapons
Drink o' DOOM!
Pet ENDER DRAGON!!!!!
Wither Storm Boss in ONE COMMAND
HEROBRINE COMMAND
HEROBRINE BOSS BATTLE (See YouTube for details)