A magic rod. Adds you more health. Super strong. Ton of damage.
Note: Minify the command to avoid issues :)
Magic Rod
KNOCKBACK STICK!!!!!!!!!!!!!!
God Sword / Instant Death Sword
Super Jump!!! V.2
go 1000mph with a walking stick
TnT
Get cool minecraft banners in ONE COMMAND NO MODS!
Herobrine's Flesh