Rifle the Bodies
The Moonrest Gardens to the southwest were the final resting place of a group of Highborne elves. It was also a ley line nexus.
The blue dragonflight used a magical device they call a surge needle to destroy that nexus, freeing the power to redirect at their will.
I want more information and you are going to get it for me!
After the land was destroyed at the ruins, the ghosts of the Highborne rose up and decimated half of the mage hunters there. Go rifle their corpses for clues.