Dyrhara

Dyrhara is a Highborne night elf mage trainer located near the Temple of the Moon in Darnassus. She is seen talking to Maelir.

During the Burning of Teldrassil, she was maintaining the portal to Stormwind City in the Temple. It is not known whether she ultimately left it and survived or not.

Quotes
The magic of today pales in comparison to that of millennia past. Still, we Highborne know much of the arcane. Are you ready to learn?
 * Gossip for mages

Arcane Momentum is a technique that allows a mage to use their physical momentum to dictate the direction of their Blink spell rather than the basic technique of Blinking in the direction you are facing.