12
22 (5d8)
walk 0 ft., fly 30 ft.
bludgeoning, piercing, slashing
charmed, frightened, paralyzed, petrified, prone, restrained, stunned, grappled
blindsight 60 ft.
1/4
The swarm can occupy another creature's space and vice versa, and the swarm can move through any opening large enough for a Tiny book. The swarm can't regain hit points or gain temporary hit points.
Melee Weapon Attack: +4 to hit, reach 0 ft., one creature in the swarm's space. 5 (2d4) bludgeoning damage, or 2 (1d4) bludgeoning damage if the swarm has half of its hit points or fewer.