I downloaded it and tried it, but the UI was way too "productivity app" and not nearly immersive enough. It felt more like checking my Mail than dueling wizards. I already deleted it. For the price, I can't say I wasted my money though.
I think it's pretty cool; way better than any of the mafia wars clones<p>I do agree with jcromartie that the UI needs to be updated with some harry potter look, but I think the core of the game is good - that's the main thing that counts