Summon

The term Summon refers to magically drawing a creature from another plane of existance to your current location to do your bidding. The school of Conjuration is responsible for all spells which are able to summon a creature or object.

Sources for Summoned Creatures

 * Demons, Devils, Fiends and Celestial beings are summoned from the Outer Planes
 * Those from the outer planes are known as Outsiders
 * Elementals, Quasi-Elementals, and Demi-Elementals are summoned from the Inner Planes
 * Those from the inner planes are known as Elementals
 * Shades, Shadows, and Invisible Stalkers are summoned from the Plane of Shadows