With the right setup this trial isn't terrible, it just relies on a lot of RNG (whether or not the Rikku's can get their limits up, Setzer's dice). Having chainers with Pods and fire/thunder elemental weapons to abuse Ace, as well as having him as a MP battery makes it a lot more doable too. I gave him Rikku's pouch for chaos grenade on off turns to blind the babies as well. It takes a pretty specific setup, but can also be done with Chizuru instead of pod users I guess. Really need those double Rikku's for the cheese method though.
Does this trial require luck in the sense that you need specific units and specific TMRs, or can the anyman player eventually beat it as well (while it's still a relevant trial)? ---