The Coalition forces hurled their might at the Stronghold, now overlaid onto the swamps of Urborg. Urza led a powerful group of planeswalkers to Phyrexia itself, hoping to destroy the invaders in their home. Gerrard and Urza are forced to fight each other in an arena, and when one kills the other, the loser is returned to life by Yawgmoth's power and the two must fight again. Eventually, Urza is decapitated and Gerrard escapes with the head, only to find himself in the Stronghold throne room, with a crazed Crovax standing over the broken form of Squee. Sisay, Karn, Tahngarth and the rest of the Weatherlight crew desperately search the Thran Tome, attempting to figure out how the Legacy and the Weatherlight are supposed to save Dominaria. The remaining coalition forces, lead by Grizzlegom, Eladamri and Lin Sivvi fight their way to the Stronghold, where they battle Crovax's Phyrexian soldiers. When Yawgmoth himself arrives from Phyrexia, the final battle begins in earnest. Gerrard and his allies try to channel the mana from the Null Moon into a destructive beam to eradicate Yawgmoth, but fail to kill him. Without any further options, Urza, who is still alive since decapitation isn't lethal to planeswalkers, asks Gerrard to take out his powerstone eyes and place them in two sockets in Karn's chest. This completes the Legacy, forming that which legend refers to as the Legacy Weapon. Light spreads all over the world, eradicating Yawgmoth's essence. Gerrard and Urza do not survive the Weapon's activation, and the Weatherlight crashes into the ocean, its planeswalking powers permanently burned out and transferred to Karn, who has become a planeswalker in his own right.