The spell created a barreling river of sand that was 80 feet (24.4 m) long. The caster cast the spell with a mouthful of sand and spat it in the direction they wished the river to flow. The caster could not control the length of the river; it always formed the same length. Nor could the caster change the direction of the river. Once formed, the river of sand rushed over anything in its path.
The river struck with enough force to rip clothing and hair from creatures, lift large wagons, or batter objects like a ram. Living creatures engulfed by the river of sand risked suffocation.
This spell required a mouthful of sand and a little spittle to cast.