Hey, we think that idea is pretty cool, allthough it didn't fit the theme too well. I really enjoyed the rounds I could play, until I stumbled across a bug where I could not place any more cards on the field. They didnt snap anymore, and I could place them wherever I wanted without any effect.
Nevertheless, building an enemy AI to fight against + so many levels + deckbuilding in such a short amount of time is really impressive! Keep up the work.