Slay Or'Kalar and take his head.
Or'Kalar leads the ogres here. He has evaded slaughter for years. His very presence is an affront to the Dark Lady; Mug'thol, traitor to the Forsaken, commands him from afar!
We do not suffer ogres or traitors on Forsaken land. Bring me this ogre's head and I will make sure it's burned properly this time.