Dismissal

abjuration

Level: cleric 4, sorcerer/wizard 5
Casting Time: 1 standard action
Components: V, S, DF
Range: close (25 ft. + 5 ft./2 levels)
Target: one extraplanar creature
Duration: instantaneous
Saving Throw: Will negates; see text
Spell Resistance: yes

This spell forces an extraplanar creature back to its proper plane if it fails a special Will save (DC = spell's save DC – creature's HD + your caster level). If the spell is successful, the creature is instantly whisked away, but there is a 20% chance of actually sending the subject to a plane other than its own.