| Kingdoms will burn!
This article contains spoilers relating to World of Warcraft: Legion! If you wish to avoid potential spoilers, please be cautious.
Cordana Felsong is a former Night elf Warden that served as the bodyguard of Khadgar during the Draenor Campaign, and she later turned to the Burning Legion under the influence of the alternate universe Gul'dan and the Orb of Dominion.
At the beginning of the Burning Legion's third invasion of Azeroth, Cordana assisted Gul'dan in stealing the body of Illidan Stormrage from the Vault of the Wardens by reciting the phrase to open the vault. Later, she was still in Azsuna and convinced the Illidari demon hunter Cyana Nightglaive to join the Burning Legion, but Cyana was slain shortly after. Cordana also convinced several other demon hunters to join the Legion, becoming Felsworn.
Cordana Felsong is the final boss of the Vault of the Wardens dungeon. She is proven to be beyond redemption, and is slain. The Illidari retrieve the Sargerite Keystone from her and bring it back to the Fel Hammer on Mardum.