Interesting idea! It was a little hard to read some of the elements though, so I ended up going from strategy to spamming cards before they expired. Oh, and I think adding some SFX would help give the player more feedback on what's happening :)
Thank you so much for the feedback! I will do my best to add some SFX, and to update the size of the text, as well as nerfing the spam-click strategy :)