I have like 5+ boxes of boosters worth of cards from various packs, but have only played the game a couple times. Lost interest because its just not as deep or fun as magic the gathering IMO. Fortunately selling some loot cards on ebay pretty much paid for all the rest of the cards I bought

Personally for card games I prefer MTG online - can play against anyone anytime and its easier to play than using real cards. My brother and I play against each other online all the time with google chat so we can taunt each other LOL.