Your familiar can concentrate on spells for you.
Prerequisite: Ability to acquire a familiar
Benefit: When you cast a spell that normally requires your concentration to maintain, you can let your familiar do the concentrating for you if it is within 5 ft. of you at the time of casting. Your familiar must remain within 5 ft. of you while concentrating to maintain your spell; otherwise, your familiar’s concentration is automatically broken. To maintain a spell, the familiar must have an Intelligence score of 5 + the level of the spell or higher. The familiar may only concentrate on one spell at a time.
Section 15: Copyright Notice – Advanced Feats: The Witch’s Brew