Liver Leech (5e Creature)
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Tiny undead, lawful evil
Skills Perception +0, Stealth +4
Death Wail. When a liver leech dies it sends out a telepathic message to its creator, which extends for up to 3 miles in all directions. If its creator is within range, it knows exactly where the liver leech was when it died.
Limited. The otyugh can magically transmit simple messages and images to any creature within 120 feet of it that can understand a language. This form of telepathy doesn't allow the receiving creature to telepathically respond.
Spider Climb. The liver leech can climb difficult surfaces, including upside down on ceilings, without needing to make an ability check.
Spy Adaptation. Whenever a liver leech has spent 4 hours in a terrain it gains a natural covering similar to its environment such as sprouting grass or moss in the forest. While it remains in an environment which it has adapted to, it has advantage on Dexterity (Stealth) checks made to hide.
Bite. Melee Weapon Attack: +0 to hit, reach 5 ft., one target. Hit: 1 piercing damage.
Liver leeches are raised from freshly deceased bodies. They are small, silent, and easily hidden so they work well as early alarm systems or spies. While they are called liver leeches, this is somewhat of a misnomer. Once the ritual is done the host's liver, stomach, lungs, and heart become separate liver leeches, looking just like their respective organ but gaining large black bug-like eyes and many small suction cup-like feet. They also gain a small sharp mouth to defend themselves. The statistics of a liver leech do not change regardless of what organ it is spawned from.