Cobalt Expertise
( Magic of Incarnum, p. 37)[Incarnum]
By channeling the soul energy of weapon masters past, present, and future, you become more adept at maneuvers of skill and expertise.
Prerequisite
Combat Expertise (PH) , CON 13, INT 13,
Benefit
Once per day, you can invest essentia into this feat. You gain an insight bonus on attack rolls, skill checks, or ability checks made to succeed on a disarm attack, a feint in combat, or a trip attack equal to the invested essentia. You also gain an insight bonus equal to the invested essentia to AC when using Combat Expertise (up to a maximum value equal to the penalty accepted on the attack roll). Once the amount of essentia invested is chosen, it cannot be altered and remains invested for 24 hours. You gain 1 point of essentia.