Speak to Dentaria Silverglade between the two pools in the center of Shadowglen.
Now that you're practiced in your new ability, perhaps you'd be willing to aid us in further pursuing the corruption haunting Shadowglen.
Dentaria Silverglade, Priestess of the Moon, has offered to aid us. You should find her between the two pools just north of our great tree. Circle around the tree to reach her and offer her any help that you can, young <class>.