My DD will never get to play the card version of this or any other similar game, because of the economics of the thing. A kid who gets really passionate about it will keep buying cards obsessively, searching for those rare and powerful ones.
I was in the military when the first card game based on that model came out: Magic The Gathering. I had a roommate who became obsessed with the game. Every payday he'd run off to the store to buy a couple hundred dollars' worth of fairly worthless cards.
I'm fine with a DS version.
