I used MrGarretto's command combiner, so this is not entirely mine.
Note: Minify the command to avoid issues :)
Disguised Boots
Iron Man's Helmet in Vanilla Minecraft
1 command... again... (3rd 1 command creation!)
Basic Trading
Pet ENDER DRAGON!!!!!
Wither Storm Boss in ONE COMMAND
HEROBRINE COMMAND
HEROBRINE BOSS BATTLE (See YouTube for details)