A lost sanctuary, not an untouched paradise.
Serra's Realm
Serra's artificial refuge sheltered angels and mortals before corruption and collapse turned its remaining power into part of the Weatherlight's engine.
Plane profile
A world worth knowing
Serra shaped this realm through white mana. When Urza's pursuers brought Phyrexian corruption into its sanctuary, she left rather than remain within the damage.
Radiant inherited guardianship, but sleeper agents turned her vigilance against her own people. The Weatherlight evacuated those willing to leave before the realm collapsed. Its power endured inside a powerstone; the world itself did not survive intact.