Grand Astromancer Capernian

Grand Astromancer Capernian is one of the four blood elf advisors that aid Kael'thas during the boss encounter in the Eye. She appears to be a mage.

See Kael'thas Sunstrider (tactics) for details on the fight.

Quotes
Aggro: Death:
 * The sin'dorei reign supreme!
 * This is not... over.

Speculation
Her name might be a reference to Nicolaus Copernicus, one of Europe's earliest great astronomers.