Source: Magic of Incarnum
By fusing your spells with incarnum, they become more capable of overcoming enemy magic and spell resistance.
Prerequisite: Con 13.
Benefit: Once per day, you can invest essentia into this feat. You gain an insight bonus on dispel checks and on caster level checks made to defeat spell resistance equal to the invested essentia. Once the amount of essentia invested is chosen, it cannot be altered and remains invested for 24 hours.
You gain 1 point of essentia.