Happy to hear that you enjoyed the game and liked the music. The medieval vibe was exactly what I was going for.
As you said, most of the game design choices I made was because of the 20s jam theme. The inspiration for this game was Slay The Spire, so eventually I would like to have some limitations for the selection, cards to be more balanced and the synergy between the cards to be basis for selection. And I agree about the card appearance...tbh art and UI is the part I'm weakest at. I'll definitely try to improve the visuals in the updated version and also add more filter options to the cards overview.
Thanks a lot for playing and for your feedback. I'll surely work on making improvements to the game in the future.