Bonechain

A bonechain spell causes a chain of skeletons under the caster’s control to suddenly spring from scattered bones. It requires special preparation in the form of material components. For each link in the chain, the priest must have one bone from a deceased human or humanoid creature. Any bone can be employed, although tradition prefers finger or rib hones. Each bone must come from a separate creature; the spell fails the instant a second hone from the same creature is activated.The maximum number of bones usable in the spellcasting is equal to the priest’s experience level. Each bone can be placed up to 20 feet from any other bone employed in the spell. A distance of greater than 20 feet negates the continuation of the bonechain.
When the spell is cast, at the point where each hone is placed, a skeleton springs up and will do the bidding of the priest casting the spell, automatically fighting the nearest enemy of the priest, if appropriate. Skeletons activate rapidly and sequentially from the hone nearest the caster outward, at the rate of 5 per round. Each activated skeleton has a minimum of 5 hit points, but is otherwise a normal animated skeleton. Concealed or covered bones might he used. Bones buried in earth, hidden in plasterwork or within wooden paneling, and so on, can spring forth as skeletons; bones buried helow foot-thick marble slabs could not (the DM decides doubtful cases). Skeletons animated by a bonechain remain in existence until the dawn following the casting of the bonechain spell, unless destroyed earlier.
This spell was specifically developed to enable ambushes, with hones planted in the ground in a circle or column, and for protection, with ranks of hones hidden in alcoves, urns and the like along comdors and passages.

[Iuz the Evil]

Iuz

Sphere: Necmmantic
(Necromancy)
Level: 4

Range: Special
Components: V, S, M
Duration: Special
Casting Time: 7
Area of Effect: Special
SavingThrow: None

Material Components: One bone from a deceased human or humanoid for each link in the chain. Only one bone from a given creature is allowed. Finger or rib bones are preferred.
The priest's unholy symbol of Iuz is also required for this spell.