If you could have any CCG/TCG on your iPhone...
...what would it be? I suspect there are a lot of Magic: the Gathering players out there who would love to see M:tG Online come to the iPhone (I don't think it will ever happen, btw). But if we were all living in a dream world and you could see any Trading Card or Collectible Card Game come to the iPhone platform, what would your choice be? Or, better yet, what would your top 3 choices be in order of preference?