Armor Class 8
Hit Points 22 (5d8)
Speed 5 ft., climb 5 ft.
Damage Resistances piercing, slashing
Condition Immunities charmed, frightened, grappled, paralyzed, petrified, prone, restrained
Senses blindsight 10 ft., passive Perception 6
Languages —
Challenge 1/2
Swarm. The swarm can occupy another creature's space and vice versa, and the swarm can move through any opening large enough for a Tiny maggot. The swarm can't regain hit points or gain temporary hit points.
Bites. Melee Weapon Attack: +0 to hit, reach 0 ft., one creature in the swarm's space. Hit: 7 (2d6) piercing damage, and the target must succeed on a DC 10 Constitution saving throw or be poisoned. At the end of each of the poisoned target's turns, the target takes 3 (1d6) poison damage. Whenever the poisoned target takes fire damage, the target can repeat the saving throw, ending the effect on itself on a success. If the poisoned target ends its turn with 0 hit points, it dies.
Mordenkainen Presents: Monsters of the Multiverse, p. 237