As your enemy's blade comes down, you are forced to decide—your life, or that of your ally?

Encounter   ✦     Martial
Immediate Interrupt      Close burst 1

Trigger: You are hit by an attack

Target: You or one ally in the burst

Effect: If you are the target, you lose a healing surge and gain temporary hit points equal to your healing surge value. If an ally is the target, that ally is hit by the triggering attack instead of you.

Published in Dark Sun Campaign Setting, page(s) 43.