From the introduction: Brought to the Empire by legionnaires returning from campaigns against the Parthians and bolstered through interaction with missionaries passing from Parthia to Thracia, The Flame of Mithras teaches a mystery cult faith which primarily venerates Mithras, and, in a lesser respect, both Ahrimanus and Sol Invictus, or the Unconquered Sun. User summary: Cult information including structure, special trait, and background story options.