If I am to trust you in this matter, you will first have to prove yourself.$B$BI must know that you are an enemy of the Shadow Council--the ones responsible for many evils here and abroad.$B$BTravel deeper into Felwood. To the west you will see a path leading to Jaedenar. It is there that the Council plots with the Burning Legion.$B$BEnter the depths of one of the corrupted Barrow Dens they inhabit and slay their kind. Return to me after you've done this. Then I will know you truly seek to help us.
Enter Jaedenar and slay 4 Jaedenar Hounds, 4 Jaedenar Guardsmen, 6 Jaedenar Adepts, and 6 Jaedenar Cultists before returning to Greta Mosshoof in Felwood.
Return to Greta Mosshoof at Emerald Sanctuary in Felwood.