Shiho.
Master healer.
Master bird tamer.
Surely these talents can be combined in a way that will defeat Erk!
Actually, she was able to, but "Talking Priscilla into stealing Florina's Pegasus and beating up Erk, by exploiting her understanding of bird-like creatures and healers." doesn't really count enough for the judges.
Well, it did for Bowser, but he's been trying to get minion-based combat legalized for ages. One out of four isn't enough, sadly.