Healing Soul( Magic of Incarnum, p. 38)
You can draw upon the soul energy of incarnum to heal your wounds.
Heal 1 ranks, CON 13,
Once per day, you can invest essentia in this feat. As a swift action, you can heal your own wounds. Each use of this ability heals 2 hp per point of essentia invested in the feat, and you can use the feat a number of times per day equal to the invested essentia. Once the amount of essentia invested is chosen, it cannot be altered and remains invested for 24 hours. If you have the ability to bind a soulmeld to your soul chakra, each use of this ability instead heals 4 hp per point of essentia invested in the feat. You gain 1 point of essentia.