Figment Illusions and Caster's Party.

[Nikolaus Athas]

Just wanting to know what should happen if the Party's caster has told them before hand that a particular illusion will happen: for example an illusionary thick fog produced by say Major Image (so sight is very limited, sound becomes deadened and a feeling of damp will fill the air), cast during a combat to blind their opponents.

Does the party automatically disbelieve?, do they have to make a will save at +4? or do they have to save as normal?
What about the caster herself? Can she see through it or does she have to make saves?

Note that the caster can be having the 'fog' swirl and react while concentrating, so it wont automatically disappear when the enemy touches it.

[Emmit Svenson]

There’s enough ambiguity in the illusion rules that different GMs would rule different ways.

In a game I ran, the caster would see through her own figments automatically, and if she told her companions in advance of a figment she planned to cast, they would get a will save at +4 to see through it when it appeared.

Enemies entering into the fog would count as interacting with it, and get a normal saving throw. Enemies at a distance would have to spend an action studying it carefully to get a save.