Drogön Chögyal Phagpa
Kublai also appointed the Sakya lama Drogön Chögyal Phagpa ("the Phags pa Lama") his Imperial Preceptor, giving him power over all the empire's Buddhist monks. In 1270, after the Phags pa Lama created the 'Phags-pa script, he was promoted to imperial preceptor. Kublai established the Supreme Control Commission under the Phags pa Lama to administer affairs of Tibetan and Chinese monks. During Phagspa's absence in Tibet, the Tibetan monk Sangha rose to high office and had the office renamed the Commission for Buddhist and Tibetan Affairs. In 1286, Sangha became the dynasty's chief fiscal officer. However, their corruption later embittered Kublai, and he later relied wholly on younger Mongol aristocrats. Antong of the Jalairs and Bayan of the Baarin served as grand councillors from 1265, and Oz-temur of the Arulad headed the censorate. Borokhula's descendant, Ochicher, headed a kheshig (Mongolian imperial guard) and the palace provision commission.