Waves of Fatigue

(Player's Handbook v.3.5, p. 301)

Level: Sorcerer 5, Wizard 5, Duskblade 5, Blighter 5, Sha'ir 5, Death Master 5, Dread Necromancer 5, Hades 6, Sloth 6,
Components: V, S,
Casting Time: 1 standard action
Range: 30 ft.
Area: Cone-shaped burst
Duration: Instantaneous
Saving Throw: No
Spell Resistance: Yes

Waves of negative energy render all living creatures in the spell's area fatigued.
This spell has no effect on a creature that is already fatigued.