Spatial Magic

The Spatial affinity of Planar Magic alters linear and nonlinear distance. There are three sub-affinities.
Leim (sounds like lame): Used for traveling. Leim is folding space on the move; taking one step that spans 100 or 1,000 or even more steps. Usually requires direct line of sight.
Portal: A stationary use for Folding Space. Casters can only open portals to a place they know well and must actively power the portal to keep it open, although there are ways around these constraints under certain circumstances. Portals generally can only transport inanimate objects and/or the caster.
Summoning: Under normal circumstances, the caster must actively power the continued presence of any being belonging to another plane for the duration of their displacement. Beings can only be summoned from other planes that are within this existence, not from planes in other existences- no evil twins/alternate versions of people (the Antipodal plane is just a world that is set up opposite this one in many ways- but there aren’t Bizarro versions of individuals). Finding beings/creatures is both dangerous and difficult. You have to know where to look and what for; just groping blindly around in a world you don’t know or understand is risky. You generally need the consent of the displaced being as well- although this could be overpowered, it would be taxing for the caster. If the summoned being breaks the cast of the summoner, or just kills them, the being will be immediately released back to their home plane of existence.
Summoning can also be used in reverse to send and hold a being to another plane. A perversion of this involving a Simulacrum was used by a cult to imprison magically Gifted beings in pocket plains and divert the beings' magic for their own uses.