Alert Bebilith

(Book of Vile Darkness)

Conjuration (Calling) [Evil]
Level: Sorcerer 6, Wizard 6,
Components: V, S, M,
Casting Time: 1 action
Range: Close (25 ft. + 5 ft./2 levels)
Effect: One bebilith
Duration: Instantaneous
Saving Throw: None
Spell Resistance: No

When in the presence of a demon, the caster conjures a bebilith—a demon that hunts other demons—to kill or chase off the original demon.
This spell is a risky proposition, however.
To determine the effect of the spell, subtract the Hit Dice of the demon from 12 (the HD of the bebilith), add the result to a caster level check, and consult the above table.
If this spell is cast while not in the presence of a demon, the bebilith acts as if the caster level check result was a 10.
Material Component: A bit of demon's flesh and a lump of iron.