Sandswallow

Sandswallow was a powerful spell used by used by wizards in the Anauroch. It was extremely rare outside the Anauroch.

Effects
When cast, this spell caused a circular area of terrain to collapse. The affected area had a radius of 30 feet (9 meters) and creatures within were buried. If a creature was strong enough, they could "swim" while the spell was altering the terrain, which prevented the creature from being buried. The spell only functioned if the terrain was a bog, muddy, quicksand or regular sand.

Components
In addition to verbal and somatic components, the spell had a material component.