Atsijus̥oi

A large snake-like creature that lives in caverns. It hides along the ceiling and drops down on its prey, sensing their chemical signature in its whisker like antenna that droop from its hiding spot. Their tripartite maws hold venom in their fangs, and they are sightless creatures with nearly translucent skin. Helical patterns of arteries and veins curl around their body, and most of their organs consist of a long digestion system and holding stomach as it can take several days to digest their prey. Their long tails and fibrous feathers lay atop their bodies like the ribbon stalactites they try to mimic.
  They live in the caverns of Egoni and are one of the most lethal creatures to humanity's explorations of the caverns.