It was a fun card game concept! Initially, it was a bit confusing. But after reading through the description and then trying one round, it made sense. There's cute artwork for the cards, and I'd love to be able to see all of the different cards! I saw some unique ones once I beat one match.
The font is a bit small to see, especially with the health being a black number on top of a dark grey heart. I don't know how long rounds are supposed to go for either, but I did manage to get a win.
One bug was that if the opponent doesn't pick up any cards, or if there's just an overflow of cards on the right, they start drawing over the bottom right card and goes out of the box.
Good work on the submission!