Clockwork Engineer Utility 12Aid Artifice
Your creations last longer than expected.
Encounter Arcane, Healing
Immediate Interrupt Close burst 10
Trigger: A creature you summoned with an artificer or clockwork engineer power takes damage
Target: The triggering summoned creature
Effect: You spend a healing surge, and the target regains hit points equal to your healing surge value + 2d6.
Published in Eberron Player's Guide, page(s) 61.