This mob drops the Black Pearl Ring of the Exalted.
--Wudadin
This named has a chance to spawn after you complete the second step in the heroic adventure "Scouting Ahead" (if the named doesn't spawn, a PH will).
As heroic adventures scale in level, its loot table depends on player levels: Level 100 drops COTF gear; Level 95 drops VOA gear; Level 90 drops HOT gear; Level 85 drops Underfoot gear.