The Phyrexian assault on the metallic plane of Mirrodin intensifies, as its citizens rally to survive and overcome. Both sides bring the full might of their arsenals: artifacts, poison, equipment, and Myr. They have some deadly new tricks, too ... This 155-card black-bordered set includes randomly inserted premium versions of all cards in the set, new mechanics (Battle Cry and Living Weapon), and a new Planeswalker card. —description from the publisher