This is a really cool concept and I'd love to see it fleshed out some more! Obviously far beyond gamejam scope but a game where you build a deck and then combine it with your opponent's to face off and build weird creatures would be a lot of fun.
Thank you :) a friend of us who play tested the game had the same suggestion. This was our first game jam (and game we build) and it was difficult to have to cut all the ideas we had. But it was very educational!
