The Virtu

A powerful wizard until his former mentor seizes his magic and uses it to shatter the Virtu, an orb that serves as the magical source and protection for the city's wizards, Felix Harrowgate's only chance of reclaiming his power is to restore the Virtu, joining forces with Mildmay the Fox, a cursed assassin and cat-burglar whose fate is linked with that of Felix. Reprint.