Four thousand years after Urza and Mishra reopened the portal to Phyrexia, the evil lord Yawgmoth sits poised to invade his one-time home, Dominaria. The plane's only hope for survival is a collection of powerful artifacts known as the Legacy—and at its center is the Weatherlight sky ship. Weatherlight contains 167 cards and sets the stage for the Tempest block storyline. —description from the publisher