Interesting concept. I didn't like not knowing what cards you're going to get, often you get ones that are completely useless in the situation. This goes especially for the final boss, which is pretty unfair. Of your offensive spells, 2 are basically impossible to hit the boss with, 2 of them only do a tiny amount of damage, 1 does slightly more, and 1 actually does some decent damage... but that strategy involves you taking at least 5 points of damage in the process... Also hitboxes are too unforgiving. Other than that I think this could be very fun if you were more likely to roll a useful hand.