The battle done, your allies turn to you for words of encouragement and support.

Daily
Standard Action      Close burst 5

Requirement: You must be taking a short rest

Target: Each ally who can hear you in the burst

Effect: When each target spends one or more healing surges at the end of the short rest, he or she regains additional hit points equal to your Charisma modifier.

Published in Player's Handbook 3, page(s) 167.