Amazing submission! Really liked the approach to transmuting by cards and the little puzzle side of trying to think the order to use them.
I agree that the only downside is that is a bit cumbersome to equip cards, but once you get accustomed to it it's not that big of a deal.
If you have the time I'd really appreciate if you give a try to my submission to the Jam! https://morrigames.itch.io/nature-dash
All the best!