I like the game mechanics (although not completely innovative, it's a bit different from hearthstone, this is a good thing as every card game in the last two years are trying to look like it). The major difficulty is gaining new cards, you'd have to win about dozen times to gan enough to buy 5 more cards which may be ones you already own, or destroy ones that you don't need to create desired one (this has been borrowed from hearthstone).
