Transmute Snow to Stone (Reversible)

This spell functions much like transmute mud to rock. Any naturally occurring snow can be transformed into relatively solid rock resembling porous white marble. The depth of the rock cannot exceed one-half its length or breadth. The rock can be chipped with a hammer or chisel, but small fragments revert to snow immediately. Stone created with this spell can be cut or quarried like normal stone for purposes of construction. Buildings and other items created of snow can be transformed to stone, retaining their shape.

Creatures standing on the stone when it reverts to snow sink initially to a depth of 1d6 feet. They do not sink farther on subsequent rounds. Stone created through this spell can be changed back to snow through a dispel magic or transmute stone to snow spell. The stone suffers the effects of heat as if it were actually marble.

The material components are a chip of white marble, a pinch of salt, and a teardrop.

The reverse of the spell, transmute stone to snow, transforms unworked, natural stone to snow.