This chapter considers a cross-historical selection of cases from the ritual magical traditions and discusses explanations of how such practices may produce subjectively convincing experiences of otherworldly beings on the one hand, and methodological questions of how we might best study them on the other. The chapter argues that our best model is found in the framework of predictive processing, through which magical ritual should be seen as an expectation management technology that manipulates material-environmental, sensory-motor, and ideational/conceptual processes in ways that set the practitioner up for certain kinds of perception-like experiences. The picture emerging is that magical ritual produces (hetero)phenomenologically similar experience narratives through a variety of different techniques, which include elements such as sensory deprivation, hallucinogenic substances, (auto)hypnosis, hypnagogic states, and visualization, but are always grounded in a material-semiotic dimension through which things, gestures, and sensations are imbued with meanings that point towards an otherworldly reality.