Heartening Exploit

Epic Tier
Prerequisite: 21st level, warlord
Benefit: Choose a warlord encounter attack power that you know. When you hit a creature with the chosen power, any ally who hits that creature before the end of your next turn gains temporary hit points equal to one-half your level.
Special: Each time you gain a level, you can choose a different warlord encounter attack power to gain this feat’s benefit instead of the power currently benefiting from it.

Published in Martial Power 2, page(s) 144.