D&Dtools1

Benefit

Embracing the corruption within your body, you can enter a state of tainted fury. In this state, you gain a number of hit points equal to your corruption score. These hit points are not lost fi rst like temporary hit points; when your tainted fury ends, you must subtract this number from your hit point total. During your tainted fury, you can declare one melee attack to be a tainted smite and add half your corruption score to the damage dealt by that attack. If you strike a creature immune to the effects of taint (such as an undead creature or a creature with the Evil subtype), that tainted smite is expended but deals no additional damage. Your tainted fury lasts for a number of rounds equal to your corruption score. When it ends, you must make a Fortitude save (DC 10 + your corruption score). If you fail this save, you take 1d6 points of Constitution damage and are sickened for 1 minute.