By Will Sustained

From LegendWiki

By Will Sustained [General]

You can exist on spiritual energy alone.

Benefit: You no longer need food or water (or whatever nourishment you normally require), and gain [Immunity] to [Sickened]. At 10th level, you no longer need to sleep, you are not affected by Suffocation, and gain [Immunity] to the [Nauseated] condition.