When the Vestige touches the Stone, the Wilderking appears. He is curious about the Vestige and asks them to show him one of their common enemies. The Vestige needs to use another stone behind the Petitioning Stone and defeat an apparition to let the Wilderking see its true nature. The Vestige can persuade the Wilderking to help, if they have the Persuasion Perk. The second pillar is up the stone stairs to the south.
The Vestige goes down the steps to find the Wilderking and two others. Speaking with the Wilderking reveals that one of the Veiled Heritance has already come to see him. He shows the Vestige a vision to prove her powers. The vision shows Andur recruiting Aranias for the Heritance.
The Vestige speaks with the Wilderking again to get their reward and complete the quest.
- Essence Rune behind the western pillar (easy to see when going back to the Treethane after defeating Norion).