Gather 15 Nether Dragonkin Eggs, then return to Tyri and Jorad on the Celestial Ridge.
We've come here to investigate rumors of a strange breed of dragons, perhaps even descendents of Deathwing himself. These are clearly not ordinary black dragons, though.
We'll know more once we've had a chance to examine their eggs. Their hatred for my flight runs deep, so I can't get close enough to gather the eggs. Will you agree to help?