Large Swarm of Tiny Beasts (swarm), Unaligned
AC12
Initiative+2 (12)
HP11 (2d10)
SpeedWalk 5 ft., Fly 30 ft.
STR5
MOD-3
SAVE-3
DEX15
MOD+2
SAVE+2
CON10
MOD+0
SAVE+0
INT2
MOD-4
SAVE-4
WIS12
MOD+1
SAVE+1
CHA4
MOD-3
SAVE-3
Damage ResistancesBludgeoning; Piercing; Slashing
Condition ImmunitiesCharmed; Frightened; Grappled; Paralyzed; Petrified; Prone; Restrained; Stunned
SensesBlindsight 60 ft.; Passive Perception 11
LanguagesNone
CRCR 1/4 (XP 50; PB +2)
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 bat. The swarm can't regain Hit Points or gain Temporary Hit Points.
Actions
Bites. Melee Attack Roll: +4, reach 5 ft. Hit: 5 (2d4) Piercing damage, or 2 (1d4) Piercing damage if the swarm is Bloodied.
Found on p.370 of MM2025 (Free Rules)