A skilled teacher, intrepid guide, steadfast guardian, inspired prophetess formidable adversary, she served as Supreme Head of the Council of the Sisterhood during and after the reign of Duke Leto Atreides She was ordained by tune and her Oder to be instrumental in die drama of the House of Atreides, her part culminating in the contest of wills she eventually played out with Paul Atreides, later Muad'thb The antagonism reputedly flourished from the time the two first met on the fateful day when Reverend Mother Gams Helen administered the test