Scorpio (if I couldn't kill Scorpio this turn, I would have lost due to massive poison counters. If, hypothetically, I had a purify, but couldn't kill Scorpio, I would lose to deck out instead):
This was a semi-upped CCYB - I fractalled the Physalia since my second Destroyer got killed. Incidentally, most of the poison came from Physalia, so now I'm even more annoyed at people that think the Puffer Fish buff made Scorpio unbeatable.