Disrupt Undead

(Player's Handbook v.3.5, p. 223)

Necromancy
Level: Sorcerer 0, Wizard 0, Warmage 0, Duskblade 0, Wu Jen 0, Sha'ir 0, Death Master 0, Glory 1,
Components: V, S,
Casting Time: 1 standard action
Range: Close (25 ft. + 5 ft./2 levels)
Effect: Ray
Duration: Instantaneous
Saving Throw: None
Spell Resistance: Yes

You direct a ray of positive energy.
You must make a ranged touch attack to hit, and if the ray hits an undead creature, it deals 1d6 points of damage to it.