Prolonged Summons (Feat)

Your summoned creatures are bound to this plane for longer than normal.

Prerequisites: Character Level 11, Cha 21, Summoning Perfection (Feat)

Benefit: Whenever you summon a creature or creatures with a summon spell you cast yourself, the summoned creature(s) remain in your service for longer than normal. Rather than vanishing at the end of an encounter, they always remain, unless destroyed or banished, until the end of a full night's rest.