(Theurgical) Summoning, or (Elemental) Summoning

Some of this magical tradition's followers summon spirits associated with the elemental forms (Aquam, Auram, Ignem, or Terram). The spirit can come from any realm, and is typically held within a container until released. The power is most commonly Magic, though other realms are possible. It is relatively common in Persia and Asia Minor. (Hedge Magic Revised Edition, pages 23-24)