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|Race||Blue dragon (Dragonkin)|
|Location||Coldarra; The Nexus|
|Status||Alive; essence absorbed into Dragonwrath|
After the creation of the , you must then bring it to Coldarra and "search out a place suitable for the Eye's activation." When you have arrived at Coldarra, you are stopped by Tarecgosa, who warns you that this place is no longer suitable for your kind.
Tarecgosa asks you to meet her inside the Nexus, where she will escort you through a special, quest-only version of The Nexus. She will aide you in fighting many of Arygos' Twilight wardens as you travel to the center, to the Nether Vortex. You must fight your way through, defeating a ferocious twilight dragon named Thyrinar. Once there, you must then use the Timeless Eye to access the previously obscured vision.
Once you have seen the vision in The Nexus, Tarecgosa tasks you to deliver information on what you have seen to Kalecgos at Nordrassil in Mount Hyjal. Later you must travel with Kalecgos back to Coldarra.
However, Arygos has betrayed Azeroth to Deathwing, and Tarecgosa sacrifices herself to save Kalecgos. Kalecgos saves her life by binding her soul to you, but the binding is not permanent, and must be strengthened with materials from the Firelands. You then take Tarecgosa's form to attend the draconic council, and thus are directly responsible for the choosing of the new aspect. Upon defeating Ragnaros and procuring his heart, the staff is completed and imbued with power thanks to Kalecgos, and provides a permanent home for Tarecgosa, who will be your friend and companion.
While on the quest  , Kalecgos reveals the following background about Tarecgosa:
- <Wistfully, Kalecgos looks off to the horizon.>
- Tarecgosa is... special to me.
- When she was but a hatchling, I was charged with her protection and education. Over the millennia, we have forged a special bond, not unlike what you would call siblings.
- Tarecgosa was born under a special sign that foretold of a great destiny. If the prophecies are true, then her survival is of vital importance to the blue dragonflight, and to Azeroth itself.
- Our affinity for one another is well known within the remnants of our flight. If your vision recounted an event that has actually taken place, she could be in grave danger.
- Yes mortal what is it?
- Beware mortal, if you are spotted here, you be caught on sight!
- You show great courage, for a mortal.
- Hurry mortal, you are not welcome here!
Patch 4.2.0 (2011-06-28): Added.