Blood Seeker's Pursuit is an utility power available to the Barbarian class at level 22.[PrP:20]
Blood Seeker's Pursuit
Barbarian Utility 22
You drawn to foes closer to death, and their wounds fortify you.
Personal
Requirement: No enemies are adjacent to you
Effect: You shift your speed. You gain 1d8 + you Constitution modifier temporary hit points, plus 1d8 addition additional hit points for each enemy adjacent to you at the end of your shift.