I need some help ruling on this clause for a module I'm building:
*Immunity to any effect that requires a Fortitude save (unless the effect also works on objects, or is harmless).*
Even after years of play, I still can't fully understand this. It's like the most torturous, ambiguous clause ever typed up by man and ported over from 3rd edition D&D. Does it only block effects that read Fortitude negate? Does it block damage effects that do not target objects and read Fortitude half? Please, I just can't wrap my brain around this.
https://www.d20pfsrd.com/magic/all-spells/i/implosion/
Implosion says it *only* targets corporeal creatures. So if I were to use it against a corporeal undead, would the effect simply be negated?
https://www.d20pfsrd.com/alternative-rule-systems/psionics-unleashed/psioni c-powers/b/baleful-teleport/
Baleful teleport also *only* targets corporeal creatures. However the effect deals damage. It doesn't require a fort save to deal damage, the save just cuts the damage by half. So it's similar to Disintegrate. Would a construct simply ignore the whole effect or would they take damage?
https://www.d20pfsrd.com/magic/all-spells/s/shout/
Greater Shout is like regular Shout, only the deafness effect always occurs. The fort save cuts the duration of deafness by half, but doesn't stop it. Would an undead always be deafened by the shout? Or would it just ignore the deafness?
https://www.d20pfsrd.com/magic/all-spells/g/gust-of-wind/
Gust of Wind requires a fort save. It doesn't explicitly say that it works on objects, but there are objects mentioned in its description. Would this spell then work on a construct? How would I rule on a similar effect that causes trips, knockdowns, or that hurls targets over distances or renders creatures prone?
Thanks for any advice you can give! It's greatly appreciated.
