Conjuration(Creation) [Lawful, Water]
Level: Cleric 3, Paladin 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 law and a heavy rain begins to fall in the area you indicate, its raindrops harsh and metallic. Above you, a jet of caustic acid lances down from the heavens.
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 chaotic creatures, dealing 2d6 points of damage per round (chaotic outsiders take double damage). In addition, each round, a gout of acid strikes a randomly selected chaotic outsider within the spell’s area, dealing 5d6 points of acid damage. After the spell’s duration expires, the water disappears.
Material Component: A flask of axiomatic water.
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 22)