For months we've been teasing out bits of information about Arena of the Planeswalkers, the Magic: The Gathering strategy board game featuring the likes of Gideon, Jace, Liliana, Chandra, and Nissa. After announcing the game in October of last year, we showed off a few bits from the game in February, including some of Chandra's game pieces. And now, the game has arrived. That's right, …