Incredible game jam game! I absolutely love the weird art and card design. It took me a bit to get going, but it was fun once I got the hang of it.
The one suggestion I have is to show the cost that a card is generating or using as an icon in the text of the card. You have a lot of text that says things like "costs 1 mica" or "clover." Maybe showing an icon there would reduce the amount of reading required for your cards.