For me Freaks do because I dont care about poison too much. Fang Pi Clan pretty much fails so I love going up against them. Sentinel and Junkz Becuase I use Montana to ruin them minus 4 att.
Piranas + Nightmare = EPIC
They're almost unbeatable.
Skeelz.....Rescue batter them
Sentinel, Sakrohm, Bangers and All Stars :'D
Skeelz, Freaks, and Vortex. Vortex might not count though as they only have like 12 cards.
Skeelz, especially when my Trish face Caelus
La Junta, Vortex and Fang Pi Clang