Skethar

Skethar are a form of Shadow Demon, an unholy mixture of shadow and illusion magics fused into an Azal, a denizen of Karelon. Skethar are cunning and cruel, actually seeking pleasure in the ways they can confound their enemies. They possess the ability to craft the world around them to make it seem as though they are not there or to seem as though they are something they are not.
Skethar fight with an agile and fluid grace, their four arms alternately blocking enemy blows and ripping them to shreds with long vicious claws. They are hard to control, sadistic and willful.
Skethar are a form of sornazal, or shadow demon, a denizen of the Spirit World with powers of illusion and deception. They are quick, agile, and deft at hiding using their chameleon like abilities to camouflage themselves appearing as something they are not.
https://www.dgsgames.com/skethar/