Crook of Rao

In the World of Greyhawk campaign setting for the Dungeons & Dragons fantasy role-playing game, the Crook of Rao is an artifact, appearing as a shepherd's crook, which has been in the possession of Canon Hazen of Veluna since 585 CY, when he acquired it from Drax of Rel Astra. The crook was used to remove most of the demons from the Flanaess in a ceremony called the Striking of the Crook, performed by a select number of Oerth's most powerful clerics and wizards in Coldeven of 586. The resulting event is known as the Flight of Fiends.