Banishment

Banishment was an abjuration spell that banished outsiders to their home plane.

Effects
A banishment spell was a more powerful version of the dismissal spell. It enabled the caster to force extraplanar creatures out of his home plane. The number and power of creatures that could be banished increased with the power of the caster. To target a creature, the caster had to present at least one object or substance that the target hated, feared, or otherwise opposed. Each such object or substance made it more likely the caster would overcome the target's spell resistance. For example, if this spell were cast on a demon that hated light and was vulnerable to holy water and iron weapons, the caster might use iron, holy water, and a torch in the spell.

If the target was banished in its native plain it was sent to a harmless demiplane, and if the spell wasn't broken within a minute the creature would remain in its native plain.

Components
An item the target found distasteful.

History
The spell was attributed to Netherese arcanist Oberon in -980 DR and was originally called Oberon's banish.