Bring Down the Warbringer!

We've made a lot of progress against the Shadow Council here at the Deathforge, but now it's time to finish the job.$B$BI found a key among the items in Kagrosh's pack. At least he accomplished something before they got to him.$B$BThe key should help you to track down this Warbringer Razuun you observed at Legion Hold.$B$BAfter you've hunted down and dealt with Warbringer Razuun, report directly to Blood Guard Gulmok. We must not keep him waiting.