Sea Hag

History has forgotten the name of the witch now called the Sea Hag. Once she advised Khan Wieran’s defence against the Gospodars when Erengrad was still the Ungol capital of Norvard. However, her curses were nothing to the freezing magics of the invading ice witches, and after a bitter war, her people were driven into the Sea of Claws and slaughtered. Legends claim she lives there still, under the waves, sending the spirits of her people to curse the Gospodars with undiminished rage.

Source

 * Warhammer Fantasy RPG 2nd Edition -- Realm of the Ice Queen
 * pg. 44