Abjure (Abjuration)
Level: Priest 4, Mage 4
Will negates. Mana: 12.
  Casting this spell forces summoned creatures to return to their own plane of existance. It affects all creatures within a 60-foot radius burst centered on a point of the caster's choice. Summoned creatures are entitled to a Will saving throw to avoid the spell's effects, but the save DC has a +8 bonus for a given creature if that creature was summoned by the caster herself. Note that the spell is not discretionary and will send friendly summons home as easily as enemy ones.