Dark Sun - Destiny and sacrifice
White Silt Horror
There are many kinds of silt horrors, and the white silt horror is te biggest. It has a bulbous body with a writhing nest of tentacles at one end. It propels itself underneath the silt and tracks its prey through vibrations. All silt horrors share an unending hunger, and the white silt horror has tentacles that can reach up to 50 fet in length which it uses to pull its meals into the silt, where it waits until it suffocates before eating it.
The PCs encountered a silt horror and survived. It seems as though Ovid’s fireball killed it but as they never saw the body, only its tentacles, they can’t be sure.