You fortify your body with akasha, making you even more durable.
Benefit
You gain hit points equal to your total essence pool (including stolen essence but not temporary essence). If the size of your essence pool changes, such as when taking essence burn, the number of hit points granted by this feat changes to match the new total.
In addition, you can invest essence into this feat. Each point of essence invested in this feat grants you one additional hit point.
Hit points granted by this feat are not lost first like temporary hit points.
You gain 1 point of essence.
Special
This feat counts as Toughness for the purpose of meeting prerequisites.