Super fun game! I've always liked the idea of procedurally generated cards/abilities, and I think you pulled it really well. I do think, however, that the 'gain gold from random card' and perhaps the 'gain maximum hp' effects need adjusting. If you get decent healing cards at the start, then you can stay and grind on the first fight indefinitely. I got up to kill count 31 with this method before I decided to start over.
Barring that, I've been stuck on 7, but I'm excited to try to get to 8!