The Art of Cyprian, found in MS Sloane 3850, contains instructions for the construction and use of a magic mirror attributed Saint Cyprian of Antioch. Along with the preparation of the mirror itself – which includes making and consecrating a particular ink for drafting certain figures of Solomon – come instructions detailing a conjuration of the ‘four worthy princes of the earth’, including a special appeal to the King of the East as their primus inter pares, and a dismissal of these same ‘four kings of the four parts of the world’. In this Guide to the Underworld, Alexander Cummins illuminates further Cyprianic dimensions of these directional courts of the various cardinal kings and their messenger-king attendants in the grimoiric corpus.