One of my players' characters can use his armor to cast obscuring mist in the square where he is.
I'm pretty sure what happens to the enemy that wants to attack him while he stays in the fog, but I'm not sure what happens to him.
He is a rogue that uses a bow to fight: while he is inside his fog, can he target enemies with his bow without any penalties?
What happens if he moves away, and an ally goes inside the fog?
EDIT: Thanks for you answers. I have checked the name and yes is the Mithralmist armor. I don't have the manuals right now, I must investigate more on it and understan if Obscuring Mist is a prerequirements or not
EDIT2: Ok as someone of you says, with the Mithralmist armor the fog doesn't effect the vision of who wear it. So the rogue not only can see without any problem, but have concealment (20% melee, 50% ranged) and can do sneak attack.