Transmute Mud to Rock

(Player's Handbook v.3.5, page 295, DnD 3.5)

Transmutation[Earth]

Level: ; Druid 5; Sorcerer/Wizard 5; Blighter 4; Sha'ir 5; Urban Druid 5
Components: V, S, DF
Casting Time: 1 standard action
Range: Medium (100 ft. + 10 ft./level)
Area: Up to two 10-ft. cubes/level (S)
Duration: Permanent
Saving Throw: See text
Spell Resistance: No

This spell transforms normal mud or quicksand of any depth into soft stone (sandstone or a similar mineral) permanently.
Any creature in the mud is allowed a Reflex save to escape before the area is hardened to stone.
Transmute mud to rock counters and dispels transmute rock to mud.
Arcane Material Component: Sand, lime, and water.