I'm not sure if I want a circle with Color/Attribute or just have that be on the frame itself. Having the attribute symbol would make it easier to show cards being more than 2 colors. I also considered doing what Digimon does and have the colors be on the name of the card.

I don't know if I'll do Defense or HP/Toughness on the creatures/monsters/units. I'm kinda leaning towards Defense. Alternatively, I could just use Attack/Power like Digimon does.

Subtype would just like Dragon or whatever.