Onyxia Key Quest Walkthrough
Quest: Dragonkin Menace (Elite)
Starts with: Helendis Riverhorn in Burning Steppes
Objectives:
Slay 15 Black Broodlings, 10 Black Dragonspawn, 4 Black Wyrmkin and 1 Black Drake. Return to Helendis Riverhorn when the task is complete.
Quest: True Masters
Starts with: Helendis Riverhorn in Burning Steppes
Here is the Fed-ex mission with a lot of running. Basically, he sends you to the following people: Magistrate Solomon Redridge Mountains, then Highlord Bolvar Fordragon and Lady Katrana Prestor Stormwind then back to Magistrate Solomon Redridge Mountains. Finally, Solomon sends you to Marshal Maxwell in Burning Steppes who sends you to Ragged John in the Burning Steppes. After Ragged John, return back to Marshal Maxwell for the next part.
Quest: Marshal Windsor
Starts with: Marshal Maxwell in Burning Steppes
Objectives:
Travel to Blackrock Mountain in the northwest and enter Blackrock Depths. Find out what became of Marshal Windsor. You recall Ragged John talking about Windsor being dragged off to a prison.
Basically, a pretty straight forward quest. As you enter BRD, the Prison is on the right of the first room. To open the prison doors, you need to get the Prison Key which is dropped off High Interrogator Gerstahn in the Prison area.
Quest: Abandoned Hope
Starts with: Marshal Windsor in Blackrock Depths
Objectives:
Give Marshal Maxwell the bad news.
Marshall Windsor has given up hope and sends you back to Marshal Maxwell.
Quest: A crumpled note
Starts with: a Drop in BRD
Objectives:
You may have just stumbled on to something that Marshal Windsor would be interested in seeing. There may be hope, after all.
Basically, take the note to Marshal Windsor in the prison area.