Empower the Runestaff of Nordrassil with 250 Smouldering Essences and obtain the Heart of Flame.
You are the first mortal to witness a dragon council, <name>, and among the only beings in Azeroth to take part in the choosing of an Aspect.
My ascension has endowed me with incredible power. I have taken the liberty to strengthen Tarecgosa's bond with you, though she will require a more... permanent home.
I would have you venture one last time into the Plane of Fire and bring me the heart of Ragnaros.
When next we meet, I will be able to suitably thank you for all that you have done.