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.

Special: This feat may be taken more than once. Taking it twice extends the duration until the next full moon. Taking it three times extends the duration to a year and a day. Taking it further times extends the duration as the GM adjudicates.