Overall pretty cozy chill game, sound effects and visuals are great as well. Just wish you can drag the card out to play it (I've been conditioned by a few TCGs :P). Managed to win against the 50HP guy as well, though I would say there were a few close calls there.
Also it's not obvious which is the enemy HP and where is your HP, I was in panic mode in the early games since I thought I had only 10HP, which probably would have change some plays overall.
And it was not obvious the d4 claw card deals direct damage, a bit hint in game would be great