Survivor likes to bring back its most popular challenges, but there's one challenge you won't be seeing ever again: the Schmergen Brawl. A cross between basketball and quidditch, the Schmergen Brawl involved contestants battling for three balls, which their teammates would then try to score with. It doesn't sound like much, but the players took that "battling" part very seriously: both times the challenge was used, a player ended up being evacuated and medically disqualified. Twice was enough for CBS, which officially put the kibosh on the brawl for good before anyone else got seriously hurt.