what quest series is this q part of?

The "tale", told in the form of a dialogue, is as follows:

Lorax: "Amir gul xi azrathud, karkun."

Player: "You will have to excuse me, Lorax, I do not speak 'crazy'."

Lorax: "Bite your tongue, <race>, lest I rip it from your skull case and use it as a horn warmer."

Player: "My apologies, I did not realize that you could understand what I was saying. What is it you are doing out here?"

Lorax: "What it is that I do, of course. I brood. I lament. I hate, I plot. When that cycle is complete I brood again. What is it you want from me? I have much on my mind."

Player: "Do you? Perhaps you should tell me what it is that is bothering you."

Lorax: "You?

"<Lorax laughs>.

"That is doubtful. I stand in these ruins and dream. Dream of the day I catch that miserable thief, Goraluk Anvilcrack.

"We had a deal, him and I. A deal that he broke. Betrayed."

Player: "What deal?"

Lorax: "I would teach him how to demon forge in exchange for his soul. The soul of a Blackrock orc is worth very little but in these trying times a soul, any soul, is better than none at all."

Player: "So how did he break the deal?"

Lorax: "He took the unforged rune covered breastplate, used in the making of the demon forged breastplate and ran away without making payment. A fool, I am not, however...the unforged chestpiece is useless without knowledge or the recipe to apply said knowledge.

"I wonder..does he sit safely in his city of Blackrock Spire and attempt to create the item from the raw material? I know he dare not leave!"

Player: "Perhaps I can be of some assistance. I will make a deal with you, Satyr. I shall recover this unforged breastplate and slay the beast. In exchange for this task, you will teach me how to create the breastplate."

<end dialogue>