Aqua Sphere
From Reydala
Conjuration(Creation) [Water]
Level: Sor/Wiz 3
Components: V, S
Casting Time: 1 Standard Action
Range: Long (400 ft. + 40 ft./level)
Area: 20 ft.-radius spread
Duration: Instantaneous.
Saving Throw: Reflex Half
Spell Resistance: Yes
Also known as "Aknier's Aqua Sphere", this spell shoots forth a blue bead from the caster's finger to the distance and height the caster chooses, creating a spectacular burst of holy water. If you attempt to send the bead through a narrow passage, such as through an arrow slit, you must “hit” the opening with a ranged touch attack, or else the bead strikes the barrier and detonates prematurely. The damage dealt depends on the type of creature. Against most creatures, Aqua Sphere deals 1d6 points of non-leathal damage per caster level (10d6 max). Against Fire Elementals and Undead, this damage is lethal. Against Water Elementals, constructs and most objects, this spell has no effect.
The sudden rush of water also does whatever a sudden douse of normal water would do, such as quench small fires, change dirt to mud, drench clothing, etc.