Location: This quest takes place in Darkshore.

Shortly: You can start this quest by clicking on Corrupter’s Master Key that drops off mobs in Cliffspring Falls caves. Free 8 Uncorrupted Thistle Bears or Uncorrupted Duskrats to finish the quest.

How to: You probably stumbled upon this quest while doing Quest: A Cure in the Dark or Quest: The Corruption’s Source. Click on the cages in the cave to free 8 animals. Than speak with Tharnariun Treetender outside of the cave or in Lor’danel.

The Rewards are 4 silvers and 250 reputation with Darnassus.