Group 1: Big Damn Heroes
Terra
Celes
Locke
Shadow

Group 2: Magic? We don't need no stinking magic!
Edgar
Sabin
Cyan
Setzer

Group 3: Quirky Mage Squad (+1 guest)
Mog
Relm
Strago
Gau/Umaro/Gogo

Yeah, technically I should probably switch out Setzer and Shadow to make Group 2's title make sense but Offering + Fixed Dice makes Setzer a cheap brawler as well.