A discussion has been sparked in my group and I would like some outside input.
We're discussing what creatures should and shouldn't be immune to our rogue's sneak attack in PF. We are aware of the one's who are automatically immune, but there are two creatures that are sorta confusing.
The first is the Will-o-wisp, It's basically a spongy ball, with no appendages or thin spots, yet it isn't immune to sneak attacks? I realize that it has a discernable body, but where is its vital/weak spot?
Next is pretty much any plant type creature that is described as a tangled mass of vines, like Shambling Mound or Assassin vine. Would this not work like a swarm?
All help is appreciated! :)