The Rune of Summoning

The voidstone reveals a vision of a multi-story building haunted by ghostly figures. As the scene sharpens and blurs, other buildings come into view, leading you to believe it is Goldenmist Village. Rooftops and tree canopies suddenly flash by, revealing the way to Goldenmist by following the Elrendar River to the west. Once there, use the voidstone near the rune of summoning atop the center building and defeat the summoned voidwalker. Only then can you return to your teacher.