It's a very good start! But could use some better UX/UI, and clearer instructions. It is unclear what the coin does. Also, could use a way to have some hints as to what to expect in the future, to be able to try and plan a strategy. Finally, is there a way to trash cards? (I didn't see it in my run, but maybe I just missed it)
Anyway, I wish you best of luck. Looks like you got some potential for something really fun there.