Reprisal

From LegendWiki

Reprisal [General]

Seeing your allies injured fills you with anger.
Prerequisites: Reaver
Benefit: You are healed twice your character level whenever an ally other than you is dropped below half their maximum hit points. When this occurs, your bonus from Reaver increases by +1 as though you had slain an opponent. This feat can only trigger four times per [Encounter].