Spinner

Not much is known about the entity that called itself the spinner; it was worshiped by a mad goblin shaman inside the ancient mine dubbed the Spider Pit, but other than him no other creature has made contact with it and lived to tell the tale.
What is known is that it had an affinity for spiders, the ability to raise the dead via shadow magic, and was partly sealed away behind a set of bronze plaques embedded in stone deep within the mine. It took the form of a vortex of shadow, and animated a massive Deathweb to attack the adventurers who eventually succeeded in restoring one of the plaques that had been stolen and sealing the entity away once more.
As the adventurers were approaching its lair, they heard its voice echoing through the mine, chanting a series of syllables: "Keh" "Koh" "Gohn" "San"