Many members of the Shattered Hand do not survive their training, <name>. Not only have you survived, but you will soon become a feared blade of the Horde.
As a reward for your progress, the warchief has commissioned his personal smith to forge a weapon.
The cursed Shadowfang Keep in Silverpine Forest is the only place to get the materials you'll need. Travel there and recover Commander Springvale's sharpening stone, a supply of moonsteel ingots, and sinew from the ghouls and geists infesting the keep.
Gordul told me that you would be bringing a variety of unusual materials, but I didn't expect anything like this. Moonsteel is said to be very rare and there's only one place I know to get it. You have risked much for this weapon, <name>, and I'll see to it that you receive a fitting reward.