Speak with Nazgrel at Thrallmar in Hellfire Peninsula.
<name>, during your foray with the Demoniac Scryer, I sent word of your exploits against the fel orcs. Nazgrel, our illustrious leader in Thrallmar, wishes to speak with you. I believe he has a bloody mission in mind...
It is good to hear of all your moves against the fel orcs, <name>. The apothecaries have spent much time and resources studying the cause of their corruption, and although such information is invaluable... my orc blood burns to strike a severe blow against these betrayers!