Spiritwrack
 (Evocation/Abjuration)

http://t1.gstatic.com/images?q=tbn:ANd9GcTEf7LkyF1RcjJp62DAzM-FoIbnmUFbQ-AZGWeblp3pGEY7PT5FZhrrv2F3tg


L^: mu6, wj6
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R#: 1" + (1')*
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D^=CT: 3r (wj: S)
C^: v.m
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CT=D^: 3r (wj: S)
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S^: S
A^: S
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!@@
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!##

Effect: A spiritwrack spell is a very strong protection/punishment spell against the powerful creatures of the nether planes
(Abyssal, Hades, Hell, etc.),
but to employ the magic, the spell caster must know the name of the being at whom he or she will direct the energy.

Prior to actual utterance of a spiritwrack spell the magic-user must prepare an illuminated sheet of vellum.

IF the demon, devil, or other powerful being from a nether outer plane is present [ie. within R] in some form
(and not possessing another creature's body instead), the magic-user can then begin actual spell incantation.

Save: Immediately upon beginning the reading of the document,
[make] its magic resistance percentage
(adjusted for the level of the magic-user)
as a saving throw;
    Save.Failure: the being named will be rooted to the spot
    Save.Success: and even if such a saving throw is made, the monster feels greatly uncomfortable,
    and IF it has not been magically forced to the locale and so held there,
    it is 90% likely to retreat to its own (or another) plane,
    as the named being is powerless to attack the magic-user while he or she is reading the spell document.

Duration.effect:
1. This first part of the document continues for 1 full round,
with the discomfort to the named being becoming greater at the end. [25%]
2. During the second minute of the incantation,
the being named undergoes acute pain and loses 1 hit point per hit die it possesses.
At the end of this round of reading, the being is in wracking pain. [50%]
3. The third and final round of utterance of the condemnation will cause a loss to the being of 50% of its existing hit points,
horrible pain, and at the end consign it to some confined space on its own plane --
there to remain in torture for a number of years equal to the level of the magic-user who prepared the document. [75%]

Obviously, the being so dealt with will be the sworn foe of the magic-user forever afterwards,
so the magic-user will be loath to finish the spell but rather use it as a threat to force submission of the being.
Each round of reading [1, 2, 3] will cause the being forced to listen to be a cumulative 25% likely to concede even without any other offerings or payment.

MC: Prior to actual utterance of a spiritwrack spell the magic-user must prepare an illuminated sheet of vellum,
carefully inscribed in special inks made from powdered rubies and the ichor of a slain demon of type I, II, or III
    and covered with gold leaf in a continuous border.
The spell caster must personally prepare this document, including the being's name thereon.
(This will require from 8-32 hours of time and
cost 1,000 g.p. for vellum, special pens, gold leaf, and other miscellaneous materials alone;
the cost of the powdered rubies is a minimum of 5,000 g.p. for each document.)

MC.DMG: Only one specially illuminoted vellum sheet may be prepared by the magic-user and be in his or her possession and/or
control at the same time.
This will be reolized by any magic-user as soon as a second is begun.
It is not possible to hove two such sheets naming the same being either,
as the magic of the naming will be held within the first,
but as soon as the second is made,
it will go therein.
Finally, no creature can make such a sheet naming itself.

Spiritwrack: The DMG notes an important 
restriction; a wizard may only 
possess 1 specially prepared vellum 
sheet at any 1 time. Nor is it possible to 
prepare 2 sheets naming the same 
creature at the same time; the 2nd 
simply has no effect. 
(Imagine #29)

 

Wu Jen: The spiritwrack is a powerful spell used against a creature of the lower planes whose name is known.
1. If the creature is present, it is rooted to the spot unless in makes its magic resistance roll (if any).
If it makes the roll, the reading makes it so uncomfortable that it flees to its home plane unless hold by magic.
2. In the second round the pain increases, and the creature loses 1 hit point for every hit die possessed.
3. In the third round of reading, the creature loses 50% of its existing hit points, and is banished to its home plane for a number of years equal to the level of the wu jen casting the spell.
Most creatures of the lower planes are loathe to be subject to this spell,
so there is a 25% cumulative chance per round that the creature submits to other demands to prevent the spell from being finished.
In any event, the being is the sworn foe of the wu jen thereafter.

Wu Jen.MC: A vellum sheet upon which the incantation and the creature's name is inscribed in ink made of demon ichor and powdered rubies
(1,000 gp for the vellum, 5,000 for the rubies for each document).
Only one such document may exist for any creature at one time, and a wu jen may only possess one document at a time.