Quajath

 is an entity imprisoned in the Tomb of the Worm on one of the islands of Eiselcross.

Appearance
The depiction of Quajath in the temple of Uk'otoa on Urukayxl showed a crowd of people clustered around the base and above them three larger humanoid figures haloed by a light or aura elevating them above the crowd. Over them, occupying most of the mural, was a curling worm with tooth-like scales over its skin. Its mouth was an open ring of teeth with three ivory eyes set where its tongue should be. Its burrowing created mountains and cliffs that looked about to break and crush the crowd below.

Background
The mystery of whether Quajath is a creation or direct progeny of Torog is unknown, but the deranged, gargantuan worm creature that scouted the Crawling King's advances in the Calamity was thought to have been slain in the ferocious final battle. Leaving a sizable portion of its wounded body behind, a slimly fragment of Quajath burrowed deep beneath the surface and slumbered in the cold earth beneath Eiselcross to recover and grow. When the Undermaw attempted to rise once more, the elemental ice of Eiselcross proved too strong, and Quajath remains entombed within the frozen north to this day.

Some of the wildfolk's of Eiselcross have discovered an exposed segment of the Tomb of the Worm, and after generations of feeding on its eternally regrowing flesh, the will of the Undermaw has suffused ther minds. Some of these "Wormkin's" now wander the world as vessels of Quajath's primal drive and alien mind, helping him psychically reach those whose shattered mind can find purpose in following Quajath, taking its gifts of raw magic and fractured secrets. They seek to one day return and free it from it's icy prison.

Uk'otoa and Desirat the Twilight Phoenix
In the Yuan-ti temple on Urukayxl, the Mighty Nein saw three murals: one depicting a giant purple bird with fire-like wings and three eyes of onyx, one showing a gigantic sea serpent emerging from the water with many small eyes of amber and three large eyes, and one of a worm-like creature with three eyes of ivory inside its mouth, plowing through the earth.