The final battle of the five Great Dragons. The Aspects are drained of their power when they use the Dragon Soul to destroy Deathwing.
"The champions who fought at our side assured the survival of our world. But now, we must see it with mortal eyes. We dragon aspects have fulfilled our great purpose, and our ancient power is expended. But though our day draws to an end, life endures and new generations will be born. Today's victory belongs to all who stood against the shadow. You are Azeroth's true guardians and the future of this world is in your hands, for the dawning of the age of mortals has begun."
This is for the five great dragons, Nozdormu the Timeless, Alexstrasza the Life Binder, Kalecgos the Spell Weaver, Ysera the Dreamer and also the former Earth Warder Neltharion who is now destroyed as Deathwing.