2 minutes ago, ovinomanc3r said:My fault. He is an exhaust upgrade. Let's say Bright Hope instead. If "when you suffer damage" happens per each damage point there will not any difference with "before you suffer damage" being before each damage point so Bright Hope basically could reduce an entire shot no matter the damage.
Or I am missing something in the wording.
Well, BH is a "While defending..." trigger. But, for what it's worth, I agree with the conclusion that you can only use it once. I'm not 100% sure, though.