Multiple Suggestions for Game Improvement
First, you need to develop a report system, to report players for 3rd Party Application use for cheating, can't tell you how many times a deck of 250 cards has the perfect draw and play to counter everything, the odds are not there for it, also to report players for stalling, and unfriendly behavior. Second, you need to discourage deck copying, there is no skill when a player doesn't create their own deck, it gets annoying playing against the same decks over and over again. Third, Need to add in all chat. Fourth, need a better match making algorithm, as a 250 card deck, shouldn't be playing against a 60-80 card deck. Fifth, add in more older set cards that can be created with wild cards. All of these things would improve the game immensely.