This game is like, almost perfect. It fits the theme more than any other game I've played. Well done!
I think there are a few little changes I'd make if you decide to go for some post jam edits.
- falling in an acid pool shouldn't be insta-death, take away one heart and let me try the jump again.
- It would be cool to see the spell coming up next directly below the character - I had trouble looking at what spell was on deck as well as controlling my character.
- More enemies! The ones in game were well designed, but too easy to dodge.