Slime Wave

You finish the spell, and a horrendous wave of Green slime explodes outward from the spot where you point.

(Spell Compendium, p. 192)  
Originally posted on D&D tools

Conjuration (Summoning)

Level: Cleric 7, Druid 7,
Components: V, S, M,
Casting Time: 1 standard action
Range: Close (25 ft. + 5 ft./2 levels)
Area: 15-ft.-radius spread
Duration: 1 round/level
Saving Throw: Reflex negates
Spell Resistance: No

You create a wave of Green slime that begins at the point of origin you choose and violently spreads to the limit of the area. The wave splashes and splatters as it passes; some slime clings to any wall or ceiling the wave touches. Green slime devours flesh and organic materials on contact, and even dissolves metal. Each creature in the area is covered with one patch of Green slime. Unlike normal Green slime, the slime created by this spell gradually evaporates, disappearing by the end of the duration.

Material Component: A few drops of stagnant pond water.