Invisibility, Undead, and Saves

[LokiDR]

This keeps coming up in my game, so I want to know what the official position is.

Are undead immune to all Illusions, or just to Phantasms and Patterns, which state that they are mind affecting? If undead can see through invisibility, they must make amazing guards.

Also, how should the save for invisibility be handled for those who can be affected. I a character makes the DC 20 spot check required to notice an invisible creature in the area, can they instantly make a save, or can they take a standard action the next round to examine it and then save. Or do they have to hit or be hit by the invisible creature.

Thanks in advance

 

[Oni]

The saving throw on Invisibility is "None or Will negates (harmless, object)".


As I understand it that means that Invisibility offers no saving throw except in the following two cases.
1. When cast on an unwilling creature
2. When cast on an an object in an unwilling creatures possession.

As far as other people looking for someone or something that is invisible they never receive a saving throw as the effect is on the recepient of the Invisibility spell and not anyone else.

 

[AuraSeer]

Oni's right about the saving throw.

And the undead immunity to mind-affecting spells is exactly that. Glamers and so forth are not mind affecting, so they affect undead normally.