Yennefer from Vengerberg was a powerful sorceress, whose explosive temperament had shown others more than once that she was no joke with her. As she was infuriated, a gray-blue fire raged in her violet eyes, heralding the advent of real trouble. She was the only sorceress able to cast a bound spell using only the movements of her slender leg, which has not been repeated by any other magic-user. After the Battle of Sodden Hill, she also became the youngest member of the Wizarding Council.