As an apprentice to Feranor Steeltoe, I learned his special technique for imbuing weapons with fiery enchantments. Last I heard of him, he was working at a smithy with a hunting party up in Lordaeron.
I can't tell you too many of the details about the process, but I can tell you it requires blood from a rare, still-beating black drake whelp's heart. I don't have much to do waiting for word from Ironforge. If you bring me a heart from the whelps in Lethlor Ravine, I'll show you my skill!
How goes the hunt, <class>?
Ah yes, this will do excellently. This will enable your weapons to strike with searing heat!
The Black Drake's Heart drops from both the Scorched Guardians and the Scalding Whelps in the Lethlor Ravine area of the eastern Badlands. It is not a common drop, however, and may take many kills to obtain. Perhaps the only bonus would be to skinners who can at least skin the dragon corpses.
Even if you don't quit before you find the heart, it is extremely (and even perhaps unreasonably) difficult to find, more akin to trying to find a dragon whelp companion. By the time you do get it, you most likely will promise yourself to never do it on another Alliance character ever again.
Upon completion of this quest you will gain: