D'ore is an ancient naaru who "died" when Oshu'gun crash landed on Draenor centuries ago. It was the first Naaru to be interred in Auchindoun. In accordance with the Naaru life cycle, D'ore's body became a shadowy void which attracts and consumes souls. It will regenerate its power from the Light over time. D'ore appears in game when is defeated.
D'ore is involved in the following quests:
See Auchindoun NPCs.
In-game evidence suggests that the original Ashbringer may have been crafted from a fragment of D'ore's body.