Ray of Clumsiness

A crackling ray leaps from your outstretched hand. The green ray seems almost sluggish in reaching its target, though it takes only an eyeblink to do so.

(SpC, p166)

Originally posted on Therafim RPG

Transmutation
Level: Sorcerer /Wizard 1
Components: V, S
Casting Time: 1 standard action
Range: Close (25 ft. + 5 ft./2 levels)
Effect: Ray
Duration: 1 minute/level
Saving Throw: None
Spell Resistance: Yes

You must succeed on a ranged touch attack with the ray to strike a target. The energy of the ray stiffens the subject’s muscles and joints, making it more difficult for the subject to move. The subject takes a penalty to Dexterity equal to 1d6+1 per two caster levels (maximum penalty 1d6+5, minimum Dexterity 1).