Benefit: When you use healing word or a divine power that allows a target to spend a healing surge, the target regains additional hit points equal to 1d6 + your Charisma modifier. The additional hit points increase to 2d6 + your Charisma modifier at 11th level, and to 3d6 + your Charisma modifier at 21st level.
Also, whenever you hit or miss a bloodied enemy and deal damage to it, you are stunned until the end of your next turn.
Updated to match Class Compendium.
Published in Divine Power, page(s) 136.