Haha yes, I did indeed do all the art :)
Balancing and Progression definitely needs work, just ran out of time to test it all properly and get a better flow.
Also ran out of time for sound options too xD was basically the last UI thing I had to do.
And yes the enemy heart functionally does nothing, just communicates 1 life, and keeps card consistency.
But thank you very much for the feedback :)