A swecond expansion for Magic the Gathering Duels of the Planeswalkers has been announced. We already knew the expansion was coming, but now we've got some details. The expansion is as of yet untitled, and will feature Sorin Markhov, a vampiric Planeswalker, pictured above, as the "big boss" character. Three new decks, including the blue/black/red deck used by the first expansion's Nicol Bolas, will become available once the single player campaign is defeated. No word on a new co-op campaign, but both previous releases included a local two-headed giant style campaign, so we'd guess that trend will continue.