How illusions interact with mind-affect immunity


Rules Questions

Dark Archive

Pathfinder Adventure, Lost Omens, Rulebook, Starfinder Accessories, Starfinder Roleplaying Game Subscriber

Alright, here's a question, I know that Mind-affect immunity makes you immune to mind affects. i know that illusions are mind affects for the most part (if not all of them). So if you throw up a silent image of a wall, they dont automatically defeat it, unless they put themselves in a position in order to take a save, such as studying or touching it, correct? and if someone walks up to an illusionary wall, and sticks their arm through it, they automatically defeat it normally, correct? so if i throw up an illusion of darkness around someone with immunity to mind-affects, they see through it without a save, but someone else would need to take a save? sorry for all the questions, just got a player playing an illusionist.

also, for shadow spells, if someone immune to mind affects gets hit with say.. shadow conjuration, they automatically make the will save, and get affected with the percentage that is real, with no chance of the whole thing being real, correct? thanks again!


Xavier319 wrote:
Alright, here's a question, I know that Mind-affect immunity makes you immune to mind affects. i know that illusions are mind affects for the most part (if not all of them).

Base assumption of your question is wrong: most illusions are not mental effects - only patterns and phantasms universally are mind-affecting effects. Glamers, figments and most shadows are not automatically mind-affecting. The fact that they use Will save does not make them mind-affecting any more than inflict wounds channeled negative energy (which also does involve Will save). Immunity to mind-affecting effects has no effect on most illusions.

Grand Lodge

From the Magic chapter, only patterns and phantasms are always mind-affecting. Other illusion spells are only mind-affecting if the spell description says so. Neither silent image nor shadow conjuration is mind-affecting.

If it did apply, a creature with immunity to a source does not suffer from such effects (Bestiary, p. 301). Rather than the effect of a successful save, the spell does nothing to it at all.

In the case of an illusion, a creature doesn't have to interact with it to be immune to it (nor to have spell resistance against it). You check as soon as a caster tries to affect it with such a spell.

Dark Archive

Pathfinder Adventure, Lost Omens, Rulebook, Starfinder Accessories, Starfinder Roleplaying Game Subscriber

I was under the impression that the creature had to study or interact with the illusion to get a save against it. If you throw up an illusionary wall, they have to study it or touch it to save, otherwise it's just like a wall to their senses. just like it says in treantmonk's GOD wizard guide, when he speaks about illusions.


Yeah it's interaction -- and even then it has to be a spell type that allows for disbelief. You can't make a will save to disbelieve greater invisibility or mirror image for example.

Grand Lodge

Xavier319 wrote:
I was under the impression that the creature had to study or interact with the illusion to get a save against it. If you throw up an illusionary wall, they have to study it or touch it to save, otherwise it's just like a wall to their senses. just like it says in treantmonk's GOD wizard guide, when he speaks about illusions.

That's correct. Immunity is different from a saving throw.

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