Arkhandus said:
For one thing, Hide in Plain Sight does not tap the Plane of Shadow. HiPS does not mention in its text as having the Shadow descriptor, but for more proof, the Manual of the Planes does not list HiPS in the extensive listing of official D&D spells and abilities that utilize the Planes. 3.5 did not override the MotP's listing in this regard, so HiPS is definately still not a Shadow effect. Just FYI, there is no way that HiPS taps into the Plane of Shadow. The Shadowdancer's own skill with using magic for stealth is what makes HiPS function.
Ok. That part with the plane of shadows (in my initial post), now really is just flavor text... if the MotP does specify, that this cannot be the case, that's really no problem at all... the point is, that I think, the shadowdancer needs "shadow" to create something in a magical way to be able to hide. He can do that anywhere within 10 ft. of some shadow.
It's the proximity to the shadow (the shadowdancer's feeble magics do not work without such a source, unlike real magic from wizards, for example), which is important.
Hide in Plain Sight also is not an illusion.
Agreed.
Now, since it cannot be illusory nor shadowstuff-based, how to adjudicate Hide in Plain Sight? It's not invisibility either, and is not mentioned nor described as mind-affecting or the like, so leaves few options.
Like the one I am using (w/o the PoS flavor

)?
Obviously, activating HiPS causes the character to seemingly disappear, since it works even when being observed by other folks, but that's just a trick of the supernatural effect.
Yes, a
magical trick.
The Shadowdancer thusly seems to disappear, but really could be found hiding in whatever shadow is nearby, ...
Uhm... no. The shadowdancer does not move from the spot.
...so someone looking into that shadowed area (via a successful Spot check) would notice the Shadowdancer hiding there.
Again, no, ...
Yet, the Shadowdancer remains physically outside the shadow, so how does this work?
That's the question.
The only logical recourse I can offer, given the terribly sparse wording of the ability and the already-disproved commonly-held possibilities, is that the Shadowdancer stays where they are and moves as desired, ...
Uhm...
...while the supernatural Hide in Plain Sight ability distorts reality to make the Shadowdancer appear in the nearby shadows, without actually moving the Shadowdancer into those shadows.
So it's an illusion then, yes? That's what illusions do.
If it not actually moves the shadowdancer, but just let's the shadowdancer
appear to have move... then it should be labeled as an illusion.
It is not, as you said yourself, thus this makes no sense.
Unlike invisibility, light doesn't just go around the Shadowdancer and flex back into its normal path as though uninterrupted, it actually impacts the Shadowdancer and thus makes them visible (sight is really just eyes picking up the light reflected off of things), but instead of reflecting/refracting off of them as normal to be seen by others, it first gets bent around 10 feet away into the shadows, then bent back into its normal path of refraction, etc.
So again, it works similar to invisibility... an illusion?
Since it's more of a very minor, weak, spacial-bending magic, it's universal instead of illusory.
Ah, right.
A rather minor,
reality-distorting, weak,
spacial-bending magic, which is not just an illusion, yet is able to let something appear as it not really is...
Wait...
True Seeing says, it let's you see all things as they really are...
Hmm... then it should work just fine, no?
True Seeing reveals invisible creatures, illusions, and such, and penetrates darkness, so you could presume that it would reveal the Shadowdancer hiding in the dark shadow behind another creature or object..... But then, you have to remember; the definition of a shadow is not merely a darkened area or the absence of light, it is an area where little or no light reaches because of an opaque (non-transparent) obstacle blocking the light's path. A shadow is the dimly-lit area behind something that light is striking, so the Shadowdancer isn't really 'hiding' in the shadow behind his or her ally; that's silly, shadows aren't dark enough to hide anything by themselves;
Well, according to the RAW you
can hide in a shadow. So this point is moot.
...only things that are already very small/thin and darkly-colored will be hidden by a mere shadow;
Yes, a bright orange cape would not be the best kind of garb then.
That's what circumstance modifiers are for... -10 would sound appropriate then, I think.
But back to the topic...
...you need true darkness to actually hide something, and you only get that when an area is isolated from light sources.
Uhm... "true darkness" in D&D provides
shadowy illumination.
The Shadowdancer is hiding behind his or her ally, or behind that corner of the building, or in that deep pit over there.
No, he's not, he's standing in the open. At least according to the RAW.
He/she's physically standing in plain sight, but appears to be hiding behind the cover of some object/creature/terrain feature.
So? If he's standing in full view,
True Seeing detects him... that "appears" part is exactly what
True Seeing is meant to see through.
Or is it that fabulous illusory non-illusion again?
Your True Seeing can no more see the Shadowdancer hiding behind that orc than your True Seeing could see a stirge clinging to the orc's back, because True Seeing doesn't give you X-ray vision to see behind obstacles.
And where exactly is the object in front of the shadowdancer, who is standing in the open?
The Shadowdancer simply cannot be hiding in the orc's shadow itself, because shadows alone aren't dark enough to hide in, but the Shadowdancer can use their mystical ability to Hide in Plain Sight, appearing to be standing right behind the orc, mimicking the orc's movements perfectly to where the orc blocks your view of them.
Without moving near the orc, who could be 10-15 ft. away... not bad!
You could still spot that stirge or Shadowdancer if you moved around to a better angle where you could see slightly behind the orc, and notice that thing hiding on its back, the sleeping stirge.
Yeah, if the stirge was simply hiding.
The HiPS ability merely needs suitably large enough shadows nearby so that they can be used as a conduit for the magic, ...
There I agree.
...traveling along the path of the shadow to the object/creature casting that shadow, in order to properly bend light just right so as to make the Shadowdancer appear to be hiding behind the orc/whatever, the proper distance away, in the proper shape/dimensions.
Well, see above.
This is the only logical way I can see Hide in Plain Sight working, given its sparse text and what marginally-related hard and fast rules and examples are given in the PHB, DMG, and MM.
You don't find it "logical" (well, as logical as a magical effect could be), that the shadowdancer creates something using the proximity of the shadow as a conduit for the magic of the supernatural ability, which allows him to hide on the spot?
Without moving, without a
Wish-like ability to distort reality, without appearing somewhere else, but still being where he is, yet using no illusory magic whatsoever?
Anyways, hope the above doesn't come along as too snippish, I just don't find it very convincing (the whole "appears to be" thing).
But it's good to see, that you basically come to the same conclusion, that the text alone does not suffice to explain the ability properly and completely, and that a DM has to
add something (mostly flavor) to make it work in a believable and consistent way, while interacting with other abilities, such as
True Seeing. This can take many forms... and depending on the specifics,
True Seeing might work, or it might not.
I'm just objecting if people say, that according to the RAW,
True Seeing does not work against HiPS, since the RAW simply does not cover that case properly. It's undefined.
Bye
Thanee