Whether it’s overpowered or not, I just don’t think it’s that interesting. Get a monster with HUGE HP, kill it, nuke all monsters, rinse/repeat. Sure, it’s not godlike infinite depth powerful, but mechanically, it’s just sort of dull. It ignores defense, enemy type, and deals huge damage – to everything. I just don’t see any reason to try anything else. Why worry about anything else when you can just stack huge HP and blow everything up in one turn. Even if half my team is dead, it doesn’t matter so long as I get my HP bomb dude dead first.
Character stats, class strengths/weaknesses, healing, defenses… I don’t really think about any of this anymore. I just wait to hit my Nuke and collect loot. (Okay, I think about some defense.)
I don’t feel like my team is working together as with other traits, they all just faff about while waiting for my HP nuke to go off. Yes, they do contribute to boosting the HP nuke, but bleh, six monster party… only one of them seems to matter.
inb4: Just don’t use it. LOL