User blog comment:Linathan/Squad Spotlight & Guide: Karna Masta (Mildran)/@comment-26140304-20160706055802/@comment-26140304-20160706192253

It's practically an RNG factor. Reduced to Ashes is a fixed attack so with mitigation, that's less than half of your units' HP. You could mitigate and guard all units just to be safe so you can tank through Big Bang and buffed normal attacks following Reduced to Ashes.