When we last visited Zendikar, the monstrous Eldrazi titans had been released from their prisons, and the Planeswalker Gideon Jura was leaving the plane to seek reinforcements. Now, Gideon returns to find Zendikar on the brink of annihilation, with the Eldrazi titan Ulamog destroying everything in its path. With Zendikar's future hanging by a thread, a group of Planeswalkers joins the Zendikari people—and even the land itself—to rise up against this alien threat.