Its a very basic card game, great for a first game. It works in general, but its a bit confusing because of lack of a few little details that would make events clearer (some small animations or health removal, effects, sounds) ... Also its sorta confusing to show "in-between" results, you should not show results until the end of a "battle". A simple thing that could make this game better is that the attack numbers should be dice rolls instead, to provide a little bit of randomness.