Try Ascension. I have surely put in at least 100 hours into it, if not more. It's not really a CCG, it's a "deck-building game", but it gets at some of the same gameplay elements. Instead of building up a permanent, persistent deck, you start each match with a standard set of basic cards and you build your deck as the match progresses.
It looks really good, is there a big "pay wall"? I don't find that HS has much of a paywall, yet anyway, and love the fact that you can get new decks simply by winning. Do you still play Ascension?
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