Languor

(Spell Compendium, page 130, DnD 3.5)

Transmutation

Level: ; Druid 4
Components: V, S
Casting Time: 1 standard action
Range: Close (25 ft. + 5 ft./2 levels)
Effect: Ray
Duration: 1 round/level
Saving Throw: Will partial
Spell Resistance: Yes

With a low thrumming sound, a blue beam lances from your finger to strike your foe and weaken him.

You must succeed on a ranged touch attack with the ray to strike a target. This ray causes creatures it hits to become weak and slow for the spell's duration. A struck creature takes a penalty to Strength equal to 1d6+1 per two caster levels (maximum 1d6+10). In addition, a subject that fails a Will save is slowed.

The spell's slow effect counters and is countered by haste.