Vaporize - Witch

Any rock, earth, mud, stone, metal, crystals, or other mineral matter in the area of effect is instantly transformed into dense, billowing fog. Creatures of living stone or animated metal sustain 5d10 points of damage each round they remain in the area of effect. Magical materials or items are allowed a saving throw vs. disintegration to resist vaporization, but common items are turned into a wet, clinging fog that slowly dissipates at the spell's end. Living creatures are not harmed by entering the area of effect, but their arms and equipment might be destroyed. The witch can vaporize the base of a cliff, the ceiling of a cavern, or the lower levels of a building in order to create a catastrophic collapse. She could also choose to excavate a pit by causing part of the ground to vaporize. The DM can assign damage for collapses or excavation as desired. This spell ages the caster 3 years.

The material components for this spell are a bit of ash and spittle.