Hi,
This is probably super obvious, but Mitigate says, Additionally, as a swift action, you can remove any DR or energy resistance you have, or the AC benefit of any ability or spell that increases your AC."
Is this just to make it easier for them to take damage so they can covert to EP?
And to take care of the needs of Zon-Kuthon worshippers.
Eyup
Yes, it's INCREDIBLY uncommon for it to be an important ability, since if you aren't getting hit hard enough to generate EP, you generally have enough of an upper hand that you don't need any extra EP.