Update on my review: I'm downgrading my score to a 1 star. This game has now become a pay to win game. I constantly get matched up opponents whose cards are 3 levels higher. I used to like this game a lot, but now it has one of the worst match making system I've seen. Tip for the devs: the "powerful opponent" system doesn't work. Instead of giving incentive to scores, why not try to avoid pairing people whose card levels are clearly different?