Pacing his library, Dragnar has an idea. A way to find the one who killed Aerie.
"If the one who did this knows how to evade godly senses, then perhaps more direct means will work. I shall need someone to search the worlds, seeking any clue they can find. I need a demigod." he mutters.
He forms the ether into a humanoid shape, then begins to add details to his new being. It stands roughly five feet tall, with a very simple body. Two arms, two legs, a head with the usual facial features, but the entire body is smooth and silvery, looking almost as if it were merely a metal cast of a creature. Inside it is even simpler, a central core contains the mind and a magical organ that keeps it alive by drawing power from the ether itself, the rest of the body merely a shell used to move about. The one notable feature is more subtle: it's mind is superior to anything created yet, except perhaps the scholars. Psychic powers subconsciously move the shell-body and allow speech, as well as giving it the ability to use illusions to disguise itself if necessary and to sense lies or partial truths from other intelligent creatures. More invasive mental attacks are possible, but draining, and only used as a last resort.
"Awaken my creation. Awaken Garthor. I have need of your abilities."
The being begins to move, animating as a stream of information teaches it everything that is happening in the universe.
"I need you to search the worlds and question their peoples. I must know who has attacked someone under my protection. Travel where you will, just be sure to report anything you find back to me."
A most interesting situation. You need not ask twice, I too seek the answer to this conundrum. Though I suppose that is your doing as well... but I would rather not get into the meaning of free will. Farewell Creator, I believe I shall begin with the elves of Aether.(too many colors already. Garthor will speak in comic sans!)
"An excellent choice, Luna is likely to be one of the more cooperative gods. Take this, just in case. You will know what it does."
Dragnar's weapon returns to it's smaller bracelet form and flies through the air onto Garthor's wrist. In an instant the information is transferred along with the device and Garthor enters one of the many portals near the entrance, leading to Aether's fortress.
Dragnar creates Garthor, a demigod with powerful psychic abilities. He also gives it the device that destroyed Astra'ath's dark blade.(I'm hoping he gets a chance to REALLY show off it's powers.)