Well, It's kind of like Magic in ways. Anyway, I stumbled upon it yesterday and Im pretty addicted. If anyone wants to play, im comahan on there. It's pretty easy to pick up if you dont know whats going on, just play the lvl 0 CPU's and little helper popups will show up. Then follow the quest line with the 'quest' button, and youll figure it out fairly quickly.
It has a deck builder/manager screen, a bazaar where you can buy/sell cards (with fake money you earn by winning and losing), and a slot machine type deal after you win games, where you have a chance at winning cards from your opponents deck. It's pretty cool, especially for a free game. So yea, come play!