This quest is not available in game.
Read the Tainted Parchment and speak to Nartok in the Valley of Trials.
- Tainted Parchment (Provided)
Ah, while you were gone a parchment came for you, <name>.
I usually avoid dealing with warlocks if I can help it, but I think you should read it when you have time. If I'm not mistaken, it came from your newly-appointed trainer Nartok. He would have words with you when you're ready.
You will also receive:
- 75 reputation with Orgrimmar