Good art and good, chill audio, really enjoyed the aesthetic you had going, but I must admit as a Pokemon TCG / YuGiOh player, I actually kinda struggled with the rules of this game. I found myself in my third playthrough just playing random cards expecting to just either win or lose, and moreorless ignored the directions from the cat.
I understand why distinguishing the cards is important with rules pertaining to "Morph a card you draw into a Banner card" for example, but perhaps include some base rules; such as, for example you can only play certain cards on top of others; x beats y beats z beats a beats x, and if you cannot do so, draw a card.
THAT said, again, good art and good chill. Looks like something you could expand upon and could be really interesting in concept. Should you expand, I wish you the best!