Really enjoyed this one! I was always curious to try out every card to see what it would do. One thing I will say, though, is that I often found myself deciding which card to get rid of to make space for one I haven't tried yet. One suggestion I have to fix this is making the cards consumable, and possibly making the player's inventory bigger. Another small note I have is that I really feel like you could add some spice to the enemy animations! Maybe a slight bounce for the slimes, or flapping wings for bats. These are just suggestions I thought would help to make the game a little bit more interesting. Super neat game, great job!