90% sure I'll be leaving Isaac unaffected. He's a magic user, but it's pretty much used to serve and defend himself rather than to help others. Being pretty misanthropic, he tends not to get too involved in things beyond nosy, amused trolling unless things start messing with him or his stuff or the very few (now one, as of recently) people he calls a sorta-maybe-but-not-really-I'm-kinda-unsure friend. He has one devil familiar capable of stopping time for everyone and everything but himself, though in short spurts. He might able to help with take-down efforts, if needed, and if he'd be pinged.