Really nice entry! It's minimalistic, but it has a great sense of gameplay progression.
I really liked the spell map, but there were a few moments when I wasn't sure what to do next. I think some additional visual feedback or a few more instructions would help guide the player.
I only knew about the spell map because I saw it in the screenshots, not because the game itself directed me there.
Anyway, I think it's a really good game. Great job!