Unholy Ice Weapon

Transmutation [cold, evil, water]
Level: Artificer * 2, Cleric */Oracle * 2, Inquisitor * 2
Components: V, S, M (a flask of unholy water or 5 pounds of powdered silver worth 25 gp)
Casting Time: 1 Standard Action
Range: 0 ft.
Effect: one ice weapon
Duration: 1 minute/level (D)
Saving Throw: None
Spell Resistance: no

This spell functions as holy ice weapon, except the weapon is made of frozen unholy water, and instead deals additional damage to creatures that are susceptible to unholy water.