conjuration
The conjuration school of arcane magic calls forth materials, creatures, or energy to the caster and can also be reversed to send said materials and/or creatures to other places, either over long distances or even to a whole different plane of existence. A wizard who specializes in conjuration spells is called a conjurer.
The preceding description was taken from this site (with minor rewrites). Here, conjuration is used to indicate the magical manifestation of inanimate objects or living beings (often supernatural ones, especially at a higher level of magic).
For calling forth said beings, see summoning. For a magic circle that helps induce the process of manifestation, see summoning circle.