Ban List for official tournaments: Weapons - Brawler Claws, Magnus Club, Atlas Club, Eyetrack Orbitars, Gemini Orbitars, Taurus Arm, Predator Cannon, Angel Bow, Capricorn Club, Ninja Palm, Compact Arm
Powers - Slipshot, Aries Armor, Libra Sponge, Bumblebee, Play Dead, and Trade-Off.
I don't really see why Playing Dead is banned, as the invisibility/invincibility is very brief. You barely have time to do anything. Maybe it has an effect I'm unaware of.
Ooh, nice weapon.