Inaccurate?

Transmute Sand to Stone

(Sandstorm)

Transmutation [Earth]
Level: Druid 5, Sorcerer 5, Wizard 5,
Components: V, S, M, 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 a mass of sand of any depth into solid stone permanently.
Any creature in the sand is allowed a Reflex save to escape before the area is hardened to stone.
If the creature fails its save, it is entangled and can't move.
It is not considered helpless, however, and it can break out by damaging the stone.
Stone has hardness 8 and 15 hit points per inch of thickness.
The creature can also make a Strength check to break free.
The break DC is 20, +2 per inch of thickness of the stone.
Transmute sand to stone counters and dispels transmute stone to sand.
Arcane Material Component: Sand, dirt, and water.

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