Raging Resurgence is an utility power available to the Barbarian class at level 22.[PrP:21]
Raging Resurgence
Barbarian Utility 22
The spirit's rejoice in your enemy's errant blow, and their exultation invigorates you.
Personal
Trigger: An enemy misses you with an attack
Effect: You spend a healing surge and regain an additional hit points to your Constitution modifier.