Swarm of Centipedes

Medium, swarm of Tiny beasts, unaligned

CR 1/2AC 12HP 22 (5d8)

Speed walk 20 ft, climb 20 ft

str: 3; (-4)
dex: 13; (+1)
con: 10; (+0)
int: 1; (-5)
wis: 7; (-2)
cha: 1; (-5)

Damage Resistances bludgeoning, piercing, slashing

Condition Immunities Charmed, Frightened, Grappled, Paralyzed, Petrified, Prone, Restrained, Stunned

Senses blindsight: 10 ft., passive_perception: 8

Traits

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 insect. The swarm can't regain hit points or gain temporary hit points.

Actions

Bites. Melee Weapon Attack: +3 to hit, reach 0 ft., one target in the swarm's space. Hit: 10 (4d4) piercing damage, or 5 (2d4) piercing damage if the swarm has half of its hit points or fewer. A creature reduced to 0 hit points by a swarm of centipedes is stable but poisoned for 1 hour, even after regaining hit points, and paralyzed while poisoned in this way.