3.5 How does Mantle of Darkness interact with True Seeing?

[Trandir]

So true seeing can see though magical concealment and all kind of darkness but it doesn't work against mundane concealement. The Hellbreaker mantle of darkness reads as follows "You can make Hide checks in any kind of darkness, even when observed by creatures that can see in darkness." is an extraordinary ability so non magical.

So what is the answer to this question?

Also how would you intend any kind of darkness? Is a shadow a kind of darkness?

Edit: at first I put in the interaction also the darkstalker feat but it has nothing to do with this.

[The Viscount]

The reference they were making was likely intended to let you hide from devils, who can all see in magical darkness. The wording is very broad, however, so I would say it would also defeat true seeing.

[Segev]

So true seeing can see though magical concealment and all kind of darkness but it doesn't work against mundane concealement. The Hellbreaker mantle of darkness is an extraordinary ability so non magical and the darkstalker feat allow to hide even from creature that can see trough darkness.

So what is the answer to this question?

What, precisely, does the Mantle of Darkness do? Create non-magical mundane darkness? Create a haze? "Creating non-magical mundane darkness" strains credulity, since D&D generally seems to operate on the assumption that mundane, non-magical darkness is merely absence of light, but nevertheless....

What it sounds like is the True Sighted creature will see a blob of darkness and not see the Darkstalker hiding within it, just like soldiers can see a cardboard box but can't see Solid Snake hiding beneath it.

[tyckspoon]

So true seeing can see though magical concealment and all kind of darkness but it doesn't work against mundane concealement. The Hellbreaker mantle of darkness is an extraordinary ability so non magical and the darkstalker feat allow to hide even from creature that can see trough darkness.

So what is the answer to this question?

The Hellbreaker is presumably still in darkness. Whether or not somebody can see him anyways doesn't matter - Mantle of Darkness provides a Hide In Plain Sight ability, so he can Hide, and is explicitly allowed to do so even in observation. Darkstalker isn't relevant here, it affects "creatures with blindsense, blindsight, scent, or tremorsense". True Seeing allows the user to see through darkness. End result: Roll the True Seer's Spot versus the Hellbreaker's Hide, same as usual for trying to detect a hiding creature.

[Trandir]

What, precisely, does the Mantle of Darkness do? Create non-magical mundane darkness? Create a haze? "Creating non-magical mundane darkness" strains credulity, since D&D generally seems to operate on the assumption that mundane, non-magical darkness is merely absence of light, but nevertheless....

What it sounds like is the True Sighted creature will see a blob of darkness and not see the Darkstalker hiding within it, just like soldiers can see a cardboard box but can't see Solid Snake hiding beneath it.

Mantle of darkness is one of the "hide in plain sight"-like class feature. It states: "You can make Hide checks in any kind of darkness, even when observed by creatures that can see in darkness."

And yes darkstalker has nothing to do with true seeing it is usefull against other special seeing modes

[Mato]

What, precisely, does the Mantle of Darkness do?A hellbreaker's mantle of darkness allows them to start hiding in any form of darkness - and this would include both magically and naturally reduced lighting conditions - even if a creature would be able to see through those conditions for some reason or another.

[Segev]

A hellbreaker's mantle of darkness allows them to start hiding in any form of darkness - and this would include both magically and naturally reduced lighting conditions - even if a creature would be able to see through those conditions for some reason or another.

In that case, the class feature lets them use "hide in plain sight" - i.e. without any other form of cover - as long as they're in darkness, no matter whether they can be seen in that darkness or not.