I think the idea is a very creative take on the theme. I like the cute hand-drawn art style the game has, everything on screen was very clear and readable. :)
I think the concept has potential to be expanded upon, since currently, I can beat the game just by spamming whatever card appears in my hand. However, I think that would be an extremely unfair criticism to make for a 2-day game jam submission, especially given how polished the game is. ;)
Wonderful job! Hope you both continue to make more games in the future!
:D