Rogues are scissors, Warriors are rock, Hunters, Paladins, Priests, Druids, Mages, and Shamans are paper. Warlocks are mushrooms. Paper beats rock, Scissors beats paper. Scissors also beats rock until 60 at which point Rock becomes an unstoppable killing machine that also beats paper, and would beat scissors, except rock can't find scissors because scissors is invisible. So Scissors beats paper and avoids Rock, and that is called "Balance."