You can channel chthonic akasha to enhance your rage.
Prerequisites
Constitution 13 or veilweaver level 1, Rage special ability.
Benefit
You can bind essence into this feat. Once essence is bound, it remains invested for 24 hours or until the next time you weave veils for the day.
When raging, you gain an insight bonus equal to the invested essence on the ability and save bonuses from your rage. Normally, this gives a bonus to Strength, Constitution, and Will saves.
You gain 1 point of essence.