Quote Originally Posted by Unregistered View Post
1. Joan's 40% dmg cut + lvl 75 Pluto fortress of 30% dmg cut + 20% light rst from her blocks + Amphisbaena's 10% light rst = 100% immune to light damage?
Correct. But you'll certainly want a LMB Amphisbaena if you're going to use her.
Quote Originally Posted by Unregistered View Post
2. Does Joan's dmg cut stack with another Joan's dmg cut during a raid or UE?--
It does. Damage cuts stack, the normal ones. You can't stack Elem Resist (though there are two frames - Hime and Eidolon) or Reflect.

Not sure about her Soul weapon though. As in, not sure if it stacks. Or even if it spreads across the raid, really. That thing is really rare on Nutaku.