Medium Beast
Armor Class 11
Hit Points 17 (5d8-5)
Speed walk +30
Challenge 1/4
Damage Resistances bludgeoning, piercing, slashing
Condition Immunities charmed, frightened, grappled, paralyzed, petrified, prone, restrained, stunned, unconscious
Senses darkvision 30 ft., passive Perception 10
Keen Smell. The swarm has advantage on Perception checks that rely on smell.
Swarm. The swarm can occupy another creatures space and move through any opening large enough for a Tiny creature. It can't gain hit points or temporary hit points.
Bites. Melee Weapon Attack: +2 to hit, reach 0 ft., one target. Hit: 7 (2d6) piercing damage or 3 (1d6) piercing damage if the swarm is bloodied.
Source: Level Up Advanced 5e Monstrous Menagerie · OGL/Open