Very cool game, I really was surprised by the variety of cards and I love the minimalist pixel art with the limited color palette!
Few things that I think could improve the game: I didn't like the unzooming card because it broke the pixel art and some stuff became hard to see like the life bar :(
I think if we could have somehow a choice to make on cards that we are taking to have more impact on the success of our run.ALso I didn't quite understand the point of merging cards, I was expecting to draw them again but I didn't maybe I missed something.
Anyway this stays a next level submission for a Jam game! Bravo.