[In the original legendry, seeing this monster was enough to cause a king’s face to contort in horror for the rest of his life. So I knew that “qlippoth” was the category to put them in.]
Qlippoth, Muirdris This abominable creature resembles
a living set of bagpipes—a series of leathery bags expanding and contracting,
with flippers and siphons protruding from its underside. Its body is covered
with thorny tendrils that grow from it like brambles, twitching and thrashing.
The
muirdris is among the foul and alien entities known as the qlippoth, and in the
deepest layers of the Abyss they are the rulers of the seas. They are found in
the Material Plane in dark and unforgiving waters, and claim vast stretches of
the lightless depths as their personal fiefdoms. A muirdris considers itself a
sculptor of flesh, and their horrible gaze causes bodies and minds to warp in
revulsion. A muirdris’ victims may find themselves with mouths on the wrong
sides of their faces, arms and legs that bend the wrong way and internal organs
and bones rearranged horrifically. A muirdris will frequently allow such
deformed victims to live as a monument to its power, but if they are truly
challenged, they will gladly warp it completely into a new form of life. Chaos
beasts follow in the wakes of a muirdris, some formed from its victims and
others simply attracted by the devastation a muirdris creates.
Shores of Swords 