I used MrGarretto's command combiner, so this is not entirely mine.
Note: Minify the command to avoid issues :)
Star Wars in Only One Command!
Gamma Radiation Bomb
My 1 command creation!
Realistic Item #1
Pet ENDER DRAGON!!!!!
Wither Storm Boss in ONE COMMAND
HEROBRINE COMMAND
HEROBRINE BOSS BATTLE (See YouTube for details)