Shadow Conjured Wall of Stone

[Twowolves]

For background:

Shadow Conjuration
Illusion (Shadow)
Level: Brd 4, Sor/Wiz 4
Components: V, S
Casting Time: 1 standard action
Range: See text
Effect: See text
Duration: See text
Saving Throw: Will disbelief (if interacted with); varies; see text
Spell Resistance: Yes; see text
You use material from the Plane of Shadow to shape quasi-real illusions of one or more creatures, objects, or forces. Shadow conjuration can mimic any sorcerer or wizard conjuration (summoning) or conjuration (creation) spell of 3rd level or lower.
Shadow conjurations are actually one-fifth (20%) as strong as the real things, though creatures who believe the shadow conjurations to be real are affected by them at full strength.
Any creature that interacts with the conjured object, force, or creature can make a Will save to recognize its true nature.
Spells that deal damage have normal effects unless the affected creature succeeds on a Will save. Each disbelieving creature takes only one-fifth (20%) damage from the attack. If the disbelieved attack has a special effect other than damage, that effect is only 20% likely to occur. Regardless of the result of the save to disbelieve, an affected creature is also allowed any save that the spell being simulated allows, but the save DC is set according to shadow conjuration’s level (4th) rather than the spell’s normal level. In addition, any effect created by shadow conjuration allows spell resistance, even if the spell it is simulating does not. Shadow objects or substances have normal effects except against those who disbelieve them.
Against disbelievers, they are 20% likely to work.
A shadow creature has one-fifth the hit points of a normal creature of its kind (regardless of whether it’s recognized as shadowy). It deals normal damage and has all normal abilities and weaknesses. Against a creature that recognizes it as a shadow creature, however, the shadow creature’s damage is one-fifth (20%) normal, and all special abilities that do not deal lethal damage are only 20% likely to work. (Roll for each use and each affected character separately.) Furthermore, the shadow creature’s AC bonuses are one-fifth as large.
A creature that succeeds on its save sees the shadow conjurations as transparent images superimposed on vague, shadowy forms.
Objects automatically succeed on their Will saves against this spell.

Well, ok, technically I need to quote this one:

Shadow Conjuration, Greater
Illusion (Shadow)
Level: Sor/Wiz 7
This spell functions like shadow conjuration, except that it can duplicate any sorcerer or wizard conjuration (summoning) or conjuration (creation) spell of 6th level or lower. The illusory conjurations created deal three-fifths (60%) damage to nonbelievers, and nondamaging effects are 60% likely to work against nonbelievers.

Ok, so here's my question: If you use Greater Shadow Conjuration to mimic a

Wall of Stone
Conjuration (Creation) [Earth]
Level: Clr 5, Drd 6, Earth 5, Sor/Wiz 5
Components: V, S, M/DF
Casting Time: 1 standard action
Range: Medium (100 ft. + 10 ft./level)
Effect: Stone wall whose area is up to one 5-ft. square/level (S)
Duration: Instantaneous
Saving Throw: See text
Spell Resistance: No
This spell creates a wall of rock that merges into adjoining rock surfaces. A wall of stone is 1 inch thick per four caster levels and composed of up to one 5-foot square per level. You can double the wall’s area by halving its thickness. The wall cannot be conjured so that it occupies the same space as a creature or another object.
Unlike a wall of iron, you can create a wall of stone in almost any shape you desire. The wall created need not be vertical, nor rest upon any firm foundation; however, it must merge with and be solidly supported by existing stone. It can be used to bridge a chasm, for instance, or as a ramp. For this use, if the span is more than 20 feet, the wall must be arched and buttressed. This requirement reduces the spell’s area by half. The wall can be crudely shaped to allow crenellations, battlements, and so forth by likewise reducing the area.
Like any other stone wall, this one can be destroyed by a disintegrate spell or by normal means such as breaking and chipping. Each 5-foot square of the wall has 15 hit points per inch of thickness and hardness 8. A section of wall whose hit points drop to 0 is breached. If a creature tries to break through the wall with a single attack, the DC for the Strength check is 20 + 2 per inch of thickness.
It is possible, but difficult, to trap mobile opponents within or under a wall of stone, provided the wall is shaped so it can hold the creatures. Creatures can avoid entrapment with successful Reflex saves.
Arcane Material Component: A small block of granite.

and assuming someone made their Will save:

What exactly is a 60% real wall?

Is there a flat 60% chance it'll be real enough to keep someone from walking through it? Would it be 60% likely to stop each individual that makes his save (so it'll stop 6 out of 10 people who make their Will saves from passing through it)? Would it be 60% likely per casting of stoping everyone who tries to pass through (as in 60% per casting, not per person trying to test it)? Would it just have 9hp per inch of thickness? If someone makes their Will save, then rolls under 60% (so it's "real" to them), can they check again next round? and again and again until they make it?

And along those lines, what about Greater Shadow Evocation and Wall of Force?

I'm looking at a Shadowcraft Mage, and this is one of many sticky issues I forsee with that PrC. Any help will be massively appreciated.

 

[Jack Simth]

It's your DM you wish to ask - not us. It's not precisely something that has a clear RAW answer.

Basically, though, you've hit on the basic options:

60% HP for the wall - consistent with Summoned Creatures
60% chance of the wall being "real" for any given person that makes their save - consistent with other nondamaging effects (e.g., the Shadow Conjuration Web).
60% chance that the wall itself is solid (not an interpretation found elsewhere - this is the first I've encountered that suggestion).

 

[Nifft]

60% HP for the wall - consistent with Summoned Creatures

This is what I'd do, but also only 60% Hardness.

Cheers, -- N

 

[Destil]

60% of the break DC, too.

 

[Twowolves]

It's your DM you wish to ask - not us. It's not precisely something that has a clear RAW answer.

Here's the catch: I'M the DM. Just wanted to see what the concensus here was before I get too deep in the planning stages of my next adventure.

 

[Jack Simth]

Here's the catch: I'M the DM. Just wanted to see what the concensus here was before I get too deep in the planning stages of my next adventure.

Ah.

In that case, pick something and roll with it.

60% HP/Hardness/Break DC is probably going to be the least headache.

And then you get the interesting issue that it is an Instant spell when duplicating Wall of Stone. The *non-magical* wall looks different to different people (depending on whether or not they made their Will save), and sometimes lets people with Spell Resistance walk through as if it isn't there (RAW, it allows SR, so if the caster of yesteryears doesn't make the SR penetration roll, they're unaffected completely) while it stops other people.

A Greater Shadow Conjuration(Wall of Stone) bridge is an interesting way to convince people to lower their SR.

 

[Twowolves]

I intend to use it to make a maze-like dungeon composed entirely of Wall of Stone, Illusory Walls, and Shadow Conjured Wall of Stone, sometimes more than one at a time. And of course, the caster of the walls can freely see through his own Illusory Walls, so he can target the PCs with more fun spells.....

 

[Particle_Man]

While the caster could see through Illusory Walls, note that not even the caster could see through a Shadow Conjuration: Wall of Stone, as it has some reality even to those that make saves.

 

[Twowolves]

While the caster could see through Illusory Walls, note that not even the caster could see through a Shadow Conjuration: Wall of Stone, as it has some reality even to those that make saves.

That's why all the ceilings are Permenant Illusions, and he'll be Spider Climbing on the real ceiling over that.