It's a shame that the cards seem to work inconsistent. For the life of me I cannot figure out what the green and red do, sometimes they do subtract red from yours and add green to opponents, but sometimes they are just arbitrary numbers. And on the last turn it said I had seven life and then won.
Main issue is that as a player I'm continuously lost as what my cards do, so I just click around. An explanation in the description would do wonders.