Heart of Rage is presented to the player upon the successful destruction of those leading the defense of Hellfire Citadel. With the outside guard gone it has become possible for a well prepared group to enter the Citadel, find out what's going on inside and perhaps do something about it.
- Fully Investigate The Blood Furnace
This quest is completed by exiting the room of the instance's final encounter through the door that opens after Keli'dan the Breaker dies.
Quest Text Edit
<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?!
<Nazgrel notices the glances of the others assembled and lowers his voice to a whisper.>
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!