hmm well the exactly card changes hp to 10, which makes it really easy to win, so maybe it could be changed to 15 hp?
and it seems like the opponent always only does 2 damage so maybe there could be some ways that it does more damage though i;m not quite sure how you would implement that (maybe after a certain amount of turns the damage goes to 3, then to 4?) or maybe chance based cards/cards that benefit the opponent become more common? unsure honestly 😅