Banishment (Abjuration)
Level: Priest 6, Mage 6, Paladin 5, Alienist 5
Will negates. Mana: 12. Base Success: 75%.
  This spell enables you to force an extraplanar creature out of your home plane, effectively destroying it here. You may affect a creature with up to twice your level in hit dice. When you cast this spell you make a Knowledge (Theology) skill check with DC 20. If you succeed the Will save DC for this spell is increased by +2 (representing your ability to call upon substances and ideals that the target hates, fears or opposes).