Sorcery ♦ is the Ability to "see" the fluxes of energy that make up supernatural reality. This is the foundation of being a Wizard, the "second sight" all mages possess. Humans must have at least a Good Sorcery ability in order to perform magic. Faerie automatically have a Sorcery of Poor, with very few exceptions (like Auberon of the Seelie Court). Reference: Castle Falkenstein Core Book p163