SI:7 has been watching your progress with interest. You service to the Alliance is well-known and tales of your deeds have reached the king's ears.
In recognition of your service, King Wrynn has commissioned the royal armorer to forge a special weapon.
The cursed Shadowfang Keep in Silverpine Forest is home to the exotic materials for your weapon. Travel there and recover Commander Springvale's sharpening stone, a supply of moonsteel ingots, and sinew from the ghouls and geists infesting the keep.
It was quite an honor to receive the commission for your weapon, <name>. When Tony mentioned using so many exotic materials, I had my doubts, but it seems you managed to find them all. This will be a fine reward for all you've done for the Alliance.