Conjuration(Creation) [Evil, Water]
Level: Blackguard 3, Cleric 3
Components: V, S, M, DF
Casting Time: 1 standard action
Range: 20 feet
Area: Cylinder (20-ft. radius, 20 ft. high)
Duration: 1 round/level (D)
Saving Throw: None
Spell Resistance: No
You call upon the forces of evil, and a heavy rain begins to fall in the area you indicate, its raindrops foul and steaming.
The driving rain created by this spell falls in a fixed area once created. The storm reduces hearing and visibility, resulting in a -4 penalty on Listen, Spot and Search checks. It also applies a -4 penalty on ranged attacks made into, out of, or through the storm. Finally, it automatically extinguishes any unprotected flames and has a 50% chance to extinguish protected flames (such as those of lanterns). The rain damages good creatures, dealing 2d6 points of damage per round (good outsiders take double damage).
Material Component: A flask of unholy water (25 gp).
Note: This version of the spell was updated from the Planar Handbook version and given a 20-foot range in order to make the spell eligible for the Persistent Spell feat.
Source: Spell Compendium (Page 227)