D&D 5E True Seeing vs Invisibility/Mind Blank

[neogod22]

For the reason [MENTION=6787503]Hriston[/MENTION] mentioned. Truesight as an effect of divination is blocked. Truesight as an innate feature is not a divination, hence it is not blocked.

I'm going to disagree with you. Spell like abilities should be treated the same as spells.

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[Ristamar]

I'm going to disagree with you. Spell like abilities should be treated the same as spells.

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Cool, I guess? I mean, if you don't agree with the Lead Rules Designer, I wouldn't expect you agree with a rando that has a similar opinion.

 

[Stalker0]

If you cast true seeing, one of the benefits is gaining True Sight, so I don't understand how one works and the other don't by your logic.

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The same reason that dispel magic takes out the truesight of a cleric that cast it, but does nothing to a pit fiend who has it naturally.

Sometimes how you gain an ability does matter.

 

[Harzel]

The same reason that dispel magic takes out the truesight of a cleric that cast it, but does nothing to a pit fiend who has it naturally.

Sometimes how you gain an ability does matter.

The thing being dispelled is the True Seeing spell, not the truesight.

 

[Harzel]

For the reason @Hriston mentioned. Truesight as an effect of divination is blocked. Truesight as an innate feature is not a divination, hence it is not blocked.

It seems that is what Crawford thinks, but it just seems to me that having the same name for two different things is a bad plan.

 

[Harzel]

Exactly but with the clairvoyance I disagree, because you're using the spell to find the target, not looking in an area and just seeing them. I think that's the difference.

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Are you sure you are thinking of Clairvoyance? The description says, "You create an invisible sensor within range in a location familiar to you..." It doesn't say anything about finding a creature. You are quite literally looking in an area and just seeing them.

 

[neogod22]

Are you sure you are thinking of Clairvoyance? The description says, "You create an invisible sensor within range in a location familiar to you..." It doesn't say anything about finding a creature. You are quite literally looking in an area and just seeing them.

Maybe, I don't have the book in front of me.

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[Coroc]

I think mind blank comes a little bit from the psionic corner and how psionics worked in some former edition. To activate some telepathic science you first had to make "contact", mind blank prevented that. Also there was some form of telepathic scrying if i remember correctly, cannot look it up right now.

The mage spell mind blank just mirrored the effects of the psionic power mind blank.

Mind blank never offered any optical protection and true seeing always countered invisibility and other illusions.

So i would rule: Mind blank does not counter true seeing, neither from spell nor innate. It does not counter arcane eye or clairvoyance either but you would not be automatically in the right Location, unless you knew upfront that the mindblanked creature is in the area where you cast any of these spells,
but any scrying device or spells that works on pseudo telepathic or magic location like a scrying ball would be countered by mind blank, as well as location spells seeking for the mind blanked creature like locate person or the like.

 

[Ristamar]

It seems that is what Crawford thinks, but it just seems to me that having the same name for two different things is a bad plan.

I just think of it in roughly the same context as Exceptional abilities from 3.x.

 

[Gadget]

I think mind blank comes a little bit from the psionic corner and how psionics worked in some former edition. To activate some telepathic science you first had to make "contact", mind blank prevented that. Also there was some form of telepathic scrying if i remember correctly, cannot look it up right now.

The mage spell mind blank just mirrored the effects of the psionic power mind blank.

Mind blank never offered any optical protection and true seeing always countered invisibility and other illusions.

So i would rule: Mind blank does not counter true seeing, neither from spell nor innate. It does not counter arcane eye or clairvoyance either but you would not be automatically in the right Location, unless you knew upfront that the mindblanked creature is in the area where you cast any of these spells,
but any scrying device or spells that works on pseudo telepathic or magic location like a scrying ball would be countered by mind blank, as well as location spells seeking for the mind blanked creature like locate person or the like.

That certainly run's counter to what the spell actually says though. And I would question its usefulness as an 8th level spell in that case. But that is hardly the only spell in 5e that would fall under that heading.