Very nice art.
I had some issue with the controls that you could only shot fireballs forward and not backward. if i press left the character will auto look right again and moving left and fire still shoot the fireball right.
In one place i fell down and hit the wall on my way down. then i got stuck in a loop spawning on the wall and falling. took some time to jump back up on the wall again and got plenty of cure cards.
Also i had a bit of hard time figure out what card to use as most of the focus in a platformer is on the level itself.