This week’s bonus event quest rewards you with a piece of Item Level 610 Hero gear!
To get started, head to Dornogal and speak to Archivist Frithrun to pick up the “Emissary of War” quest. You’ll need to complete 4 dungeons on Heroic or Mythic difficulty. The easiest way is to use the Group Finder to clear 4 Heroics.
The quest reward is 1 
Cache of Nerubian Treasures that contains an Item Level 610 Hero gear piece!