You sacrifice your essence to overcome a friend's adversity.

Daily   ✦     Arcane, Shadow
Immediate Interrupt      Close burst 5

Trigger: One ally within 5 squares of you misses with an attack roll or fails a saving throw.

Effect: You lose a healing surge, and the ally rerolls the triggering roll with a +4 power bonus and must use the second result. If the new result is a miss or a failed saving throw, this power is not expended.

Published in Dragon Magazine 400.