Magister

The Magister was the personal champion of Mystra, existing to promote the Art in her name.

The role of Magister was created in the wake of the Dawn Cataclysm. A man named Azuth gained the office, but passed it on once he himself gained divinity. Only Mystra herself knew the full roster of Magisters but many made their names known by their deeds during their tenure in the office. Elminster and Laeral Silverhand passed on their knowledge of the Magister's abilities and responsibilities to various sages. If they hadn't, then only Mystra, Azuth and the current Magister would know any of the pertinent details.