Apocalypse

The Stronghold of Rath materialized into the swamps of Urborg. Urza gathers a group of planeswalkers from each part of the multiverse to make an assault. He’s captured during the battle and forced to fight in a pit against Gerrard which cuts his head. He finishes to find Yawngworth, commander of the Phyrexians with the rest of the crew and then he’s got a vision of Urza explaining him what the Legacy really is. Karn is the Legacy and he needs gems hidden in Urza’s eyes to be activated. An explosion of light follows, destroying all the Phyrexians on Dominaria and the plane of Rath. Karn will be the only survivor of the battle and his activation will awake his Planeswalker Spark.