Wanted: Bladefist's Seal

Today I have a very wealthy collector in need of something very unique indeed. Warchief Kargath Bladefist carries upon his person his seal of command, which he uses to sign all official documents. I want you to retrieve it for me. You will find him deep within the Shattered Halls. No doubt you will have to wade through a veritable army to get to him. I have no doubt that you will succeed.