(Theurgical) Summoning, or (Elemental) Summoning
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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)