Thanks, Nilsie.
The rounds I won, I won them because of you. This was your idea. My small tweak to both decks was the game-breaker.
Round 2 I had a good chance, too. But I didn't draw any Mind Flayer.
Ok, commentary:
Round 1: I killed him, even if this deck was more a deckouter. Dim shield blocked the naughty discord, and frogs gave some damage.
Round 2: Manage to stale until I had 9 cards in my deck, no flayer. That was the worst thing that could happen to me. And 3 freeze still in deck.
Round 3: My heartbeat accelerated. Once I fractaled frog, I thought I was in a trap. Luckily there was no pandemonium, and I managed to win.