Qoloda provides answers

Discovery, Exploration

The Saints of Fate return to Qoloda's tower and she casts Eye of the Spheres on their behalf. Her description leaves no doubt that the Primordial Cornerstone lies in a chest high in a tower of the Mansion in the Harbor outside Avul. They learn it is owned and ruled by the cambion daughter of Banggu, himself, a fiend named Fiz'