Banishment

Caster Level: Cleric 6, Wizard/Sorcerer 7
Innate Level: 6
School: Abjuration
Components: V,S
Range: Short
Save: Will
Spell Resistance: Yes
Area of Effect: Colossal
Duration: Instant
Additional Counterspells: None
Description: The caster is able to cause all summoned creatures, familiars, animal companions, and Outsiders in the area of effect to be destroyed. A number of creatures equal to twice the caster's level in HD can be banished.