This quest is not available in game.
Destroy the drake champion of the Green Flight, Somnus. Take his skull and return it to Emberstrife.
Just as our Father crushes the Aspects themselves, so too must we strive to bring chaos and destruction to their children.
You must test your battle prowess against the sleepless dreamers: The children of the Green Flight.
Travel to the Swamp of Sorrows and track down Somnus, drake champion of the Green Flight. Let flow your hatred; dominate the insect... Return to me with his skull...