It's an interesting concept and may be a good baseline to make a game!
The biggest issue I came across is the randomness of the choices and there only being a binary choice. I had to retry the first level multiple times just because I got dealt only "SPIKE" or only "BANDAGE" multiple turns in a row, which meant that there was no way I would win. Having more factors that influence the outcome could make this more interesting, like external factors, more choices, more cards, more effects, so on and so forth.
Regarding the rest of the game, you already have some polish in terms of animations, and even style coherence (even though it's greyboxed), but like Brocktho mentioned, these types of games where you have limited control or choices bank on the fact that they have a lot of juice in interactions (think Reigns cards interactions) and either deep mechanics and/or a deep story in which the player's actions have consequences (think Reigns or Sort the Court). So spending some time on that could make the experience more cohesive, have real weight on choices, and less "min-max -y", let's say.
It's a cool idea!