Hold in hand or wear to gain effects. LOL
Note: Minify the command to avoid issues :)
Rideable Nyan Cat
Mark 1: Iron Man's Helmet in Vanilla Minecraft
Tips for clearing lag!
Sonic Screwdriver!
Pet ENDER DRAGON!!!!!
Wither Storm Boss in ONE COMMAND
HEROBRINE COMMAND
HEROBRINE BOSS BATTLE (See YouTube for details)