Mosslet (5e Creature)
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Tiny monstrosity, unaligned
Damage Resistances acid, bludgeoning, cold, fire, lightning, necrotic, piercing, poison, psychic, radiant, slashing, thunder
Amphibious. The mosslet can breathe air and water.
Bite. Melee Weapon Attack: +1 to hit, reach 5 ft., one target. Hit: 1 (1d2) piercing damage.
Tun. The mosslet forces most water from its body and collapses into a cryptobiotic state. It is paralyzed; does not need to eat, drink, or sleep; and is immune to all damage except magical bludgeoning, piercing and slashing. This lasts until the mosslet decides to revive itself, at which point it gains a level of exhaustion.
These rare creatures are the result of the unnatural fusion between a humanoid and a water bear. Feeding on moss or algae, the mosslet is small, stupid, and mostly unremarkable aside from its incredible resilience and ability to enter a state known as a "tun", achieved by desiccating almost entirely and slowing down its bodily processes to the absolute minimum. In this state the monster is incredibly difficult to damage by physical, kinetic or chemical means, resistant to mental attack and essentially indistinguishable from a lump of organic debris.