Seconded. Baigan cheats and I'm done. My Silence resist doesn't seem to cover it, my medicas never trigger in time, my Banishing Strike can't cover everyone at once. I'm frankly a bit unwilling to even try a non-synergy A-Team, just because I don't feel like it will make a difference.
I get that it's supposed to be challenging. But this guy has an absolute defense, and without a source of Esuna, it becomes insurmountable. I could waste my RW slot on something with Astra, but that would only block the Blindga, because he uses them in sequence. A challenging fight can have a gimmick you can learn, and that's fun; it's not fun when his gimmick is a big red "NOPE" because your abilities are effectively locked.
I beat Kain, so that's a thing, at least. I'll take a shot at Master Roshi next, but I'm otherwise done with this event, and not in a satisfying way.