Cerulean Fortitude

(Magic of Incarnum, page 35, DnD 3.5)

[Incarnum]

You can use incarnum to boost your ability to resist effects that would adversely affect your health.

Prerequisite

CON 13

Benefit

Once per day, you can invest essentia into this feat. You gain an insight bonus on Fortitude saves 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.