Crypt thing

Crypt things were a rare kind of intelligent undead bound to protect a specific burial site.

Description
A crypt thing resembled a human-sized skeleton, but wore dark robes. Their empty eye sockets contained an eerie point of red light.

Combat
What made crypt things most dangerous was their ability to teleport adversaries away. Otherwise they attacked with their bare, skeletal hands. Aside from the common immunities of undead, only weapons imbued with magic were able to hurt a crypt thing. Due to their strong attachment to the place they guarded, priests were unable to drive them away with their holy power.

Habitat/Society
On rare occasion a corpse rose as a crypt thing on its own accord driven by a desire to protect the graves of its descendants. More often such an undead was created by a priest or wizard with the help of the create crypt thing spell. Only one crypt thing was found at one burial place, but it sometimes commanded a group of the less powerful crypt servants.

The bones of a crypt thing could be used in the creation of a potion of undead control or especially effective pipes of haunting.

Realmslore
According to the sage Elminster, crypt things existed in the ruins in the Undermoor, the area of the Underdark below the High Moor and Serpent Hills. They could also be encountered in the dreaded ruins of Shoonach.