Heart of Incarnum
(Magic of Incarnum, page 38, DnD 3.5)
[General]
You tap into the power of your heart chakra to gain resilience.
Prerequisite
Ability to bind a soulmeld to your heart chakra
Benefit
You gain hit points equal to your essentia pool. If the size of your essentia pool changes, the number of hit points granted by this feat change to match the new total.