Man, haven't looked at anything Dragonball related in a while. That series kinda slipped from my mind a while ago. And that how Rock, Paper, scissors was meant to be played, as a full-contact magic related blood sport.
Concerning the Rock Paper Scissors part: Some characters in DB/Z/GT did in fact have the ability to create objects out of thin air, its called Magic Materialization (Busshitsu Shutsugen Majutsu, approx. "Matter Appearence Sorcery"). Fuck me, I'm such a friggin' DB fanboy.