Originally Posted by
Slashley
It's a damage cut. I... guess you could say it's like a 60% Def buff, kinda. When compared to Nike's 12%, there's a massive difference.
I'd probably go with Snow Raphael, just because you have Sol. That gives you -35% Def -50% Atk without considering Soul skills, so chances are you'll be using Mordred with Ambush.
Notice that damage cuts stack properly, so one argument for Snow Raphael is that with Joan, you can reduce all damage taken by 70% for a turn. This effectively makes you immune to one Overdrive from a boss, which is really valuable.