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Feral Rejuvenation
Barbarian Utility 2

Trigger: your attack damages an enemy

Effect: "You spend a healing surge. If the triggering attack reduced an enemy to 0 hit points, you regain additional hit points equal to one half your level + your Charisma modifier." [PrP:12]

Feral Rejuvenation is a Utility power available to barbarians at the 2nd level.

You call on the spirits to stitch you wounds, proudly displaying the blood you have spilled in their names.