we could probably design an online game of it, maybe gamemaker (I could definitley do), or C++ if I ever learn how, which I would like a bit more than a GM one. If it were to be designed, it would probably start out in such a way that you gain a full sized, somewhat premade, deck to begin with, and then each day you are allowed to "draw" a few new cards. to add to your deck, which then there would be some sort of deck organization screen (In the pokemon TCG you are only allowed a certain number of cards to a deck, and then a certain number of each card type).
Then there would be the online battle system, which would be... well, lets not get into this in this topic, if someone is interested in designing the schemantics of the actual TCG, or the systematics of the virtual game it would be played on, lets make a new topic.