This adds a skeleton with a bow that one shoot kills anything!
Note: Minify the command to avoid issues :)
Holographic Text Command
Drink o' DOOM!
The one hit kill OP axe!
The StrangeEntity Mob!!!!!!
Pet ENDER DRAGON!!!!!
Wither Storm Boss in ONE COMMAND
HEROBRINE COMMAND
HEROBRINE BOSS BATTLE (See YouTube for details)