Polymorphic Ethereal Slave
Conjuration (Calling) [Air] (see text)
Level: Sor/Wiz 7
Components: V, S, M
Casting Time: 1 hour
Range: Close (25 ft. + 5 ft./2 levels) (see text)
Target: One gingwatzim of up to 8 HD
Saving Throw: Will negates
Spell Resistance: Yes
The first part of this spell attempts to lure a gingwatzim (a monster described in Enchiridion of the Fiend-Sage #7, an article I wrote for the Living Greyhawk Journal, which was printed in Dragon Magazine #295). from another plane to a specifically prepared trap, which must lie within the spell's range. The called creature is caught in the trap, after which a duel of wills occurs to determine if it will obey you.
To create the trap, you must use a magic circle spell, focused inward. The type of gingwatzim to be bound must be known and stated. If it has a specific, proper, or given name, this must be used in casting the spell.
The target creature must attempt a Will saving throw. If the saving throw succeeds, the creature resists the spell and is not drawn from the Ethereal Plane. If the saving throw fails, the creature is immediately drawn to the trap (spell resistance does not keep the creature from being called). The creature can escape from the trap with a successful SR roll, dimensional travel, or a successful Charisma check (DC 15 + 1/2 the caster's level + the caster's Charisma modifier). If it breaks loose, it can flee or attack you. A dimensional anchor cast on the creature prevents its escape via dimensional travel. You can also employ a calling diagram (see the Player's Handbook section on Calling, page 157) to make the trap more secure. If the creature does not break free of the trap, it is forced to serve you, and the second part of the spell activates.
The second part of the spell allows you to shape the alternate forms of the conjured creature. Select an animate form and an object form for it according to the type of gingwatzim called. For example, a pakim gingwatzim could be given a cat form and a +1 dagger form. You may order the creature to remain in one form at all times, allowing you to use it as a magic item.
The creature can attempt another saving throw against the spell every week to break free of your control. If it breaks free, it can return to the Ethereal Plane at any time as a standard action, although it is likely to try to kill you before doing so.
When you use a calling spell to call an air, chaotic, evil, good, or lawful creature, it is a spell of that type. For example, if this spell is used to call a neutral evil naranzim, it is an evil and air spell.
Material Component: Incense, powdered iron, and onyx dust. The value of the onyx dust depends upon what sort of creature is being called: pakim, 2,000; graegzim, 3,000; eoluzim, 8,000; maronzim, 12,000; naranzim, 18,000.
Notes: Based on lesser planar binding, but of indefinite duration. gp cost is based on what effective magic weapon they become, since that's the minimum of how useful they are. The costs are actually slightly less than an actual weapon of its plus-equivalent since it gets a chance to get away at every level, is subject to spells like dismissal, etc.
The costs appear a little high, especially because lesser planar binding has no gp cost, but lesser planar binding is only for one service, whereas this spell has a theoretically indefinite service. At the minimum, you can use this spell to "conjure" a +1 or better weapon without having to have a feat or spend days creating it, even if there is a risk of it turning on you or getting away.