Abjurism is the unique Discipline of the Septemi, a bloodline of seventeenth-century Europe dedicated around proving that the Embrace does not make one inherently evil. Abjurism is meant to provide protection against supernatural beings; it creates a shield against powers such as Disciplines, Gifts, Rotes, Transmutations, and Contracts, but is useless against mundane attacks. For more details, purchase the Ancient Bloodlines sourcebook for Vampire: the Requiem.