Magic the Gathering MTG Magic 2010 core set Booster pack contains 15 cards each. Released in 2009, Magic 2010 (M10)  is the first core set to contain approximately fifty percent new cards. The set contains 249 black-bordered cards (15 mythic rare, 53 rare, 60 uncommon, 101 common, 20 basic lands). At least five plainswalkers will be included in the mythic rares.