Crushing Sphere

(Lost Empires of Faerun)

Evocation [Force]
Level: Sorcerer 6, Wizard 6,
Components: V, S, M,
Casting Time: 1 standard action
Range: Medium (100 ft. + 10 ft./level)
Effect: 1-ft.-diameter/level sphere, centered around a creature
Duration: 1 round/level (D)
Saving Throw: Reflex negates
Spell Resistance: Yes

This spell functions like Otiluke's resilient sphere, except that the sphere painfully constricts the target, hampering her movements and breathing.
The target is entangled and takes 3d6 points of nonlethal damage per round as the sphere contracts.
If the target is rendered unconscious, any remaining damage from the crushing sphere is lethal damage.
Material Component: An eggshell, which is crushed as the spell is cast.