Whip Rachis (5e Creature)
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Small aberration, chaotic evil
Sense Magic. The whip rachis senses magic within 120 feet of it at will. This trait otherwise works like the detect magic spell but isn't itself magical.
Bite. Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 5 (1d6 + 2) piercing damage.
Light-absorbing black, leathery carapace with a vaguely centipede-like in form. Two pairs of opposing jaws at the end of yard-long, ridged body not unlike a human spinal column, with long two long rows of legs that resemble finger bones. Thin, spindly hairs jut from either side of the creature between segments. This creature does not possess even the hint of a head. It moves in swift bursts, snapping its body in sudden, curving thrusts along walls and floors.