The Crucible

 is a quest in

Synopsis
Before the Faces of the Hunt deign to talk to the Watcher, the Watcher must prove themselves worthy of talking to. To achieve this, they need to retrieve at least one relic from the Isle of Kazuwari, so that they may trigger the next challenge.

Walkthrough

 * In order to learn what it all means, talk to Engari first. Apart from a number of unique interactions with your party members, Engari will explain the mechanics of the Pool of Memories, the Faces, and other critical elements of the Temple, the Crucible, and the DLC.
 * The quest frames the collection quests for each of the faces and effectively aligns you with one of them, based on which artifacts you collect and which challenges in the pool you complete.
 * While you can unlock all three sets of challenges by completing the first step of their associated quests and offering the artifacts at the Pool of Memory, only one of them can be finished, thus awarding only one of the three soulbound weapons:
 * The Surviving Face: Survivor's Tusks
 * The Seeking Face: Seeker's Fang
 * The Slaying Face: Slayer's Claw