Fully investigate the Blood Furnace and then report to Nazgrel at Thrallmar in Hellfire Peninsula.
<class>, you must gather a group to investigate the Blood Furnace inside Hellfire Citadel at once!
The magical scrying that we have at our disposal indicates that something unnatural is occurring in there. But a powerful force inside is blocking any detailed arcane investigations, so it must be very important.
You should expect heavy resistance - no other mission that we've sent in there has ever returned!
Scout it entirely and then report back to Nazgrel, advisor to Thrall, with what you witness.
THEY HAVE A PIT LORD?!
That seals it. They must be using the blood from this pit lord to create new fel orcs that are somehow not aligned with the Burning Legion. And if they can do this to the Mag'har brown orcs, they can do it to us!
We'll have to strike at the heart of their military might, and soon!