Card games are fun. I like that it's simple, feels just like the type of game you would find in a place like this. The portraits and biographies of the characters are great to look at and read. I love hand-drawn games. The strategy of figuring out what card you should place based on what has the least-likely chance of being countered is fun. The NPCs snowballed me a few times though which was funny. Is the AI different for each?
Are you planning to take this further? Looking forward to seeing what you come up with to supplement the card game matches.