Swarm of Stirges

Medium Monstrosity, Unaligned

AC: 14

Initiative: +3 (13)

HP: 36 (8d8)

Speed: 10 ft., fly 40 ft.

STR
4 (-3)
DEX
16 (+3)
CON
11 (+0)
INT
2 (-4)
WIS
8 (-1)
CHA
6 (-2)

Resistances: bludgeoning; piercing; slashing

Condition Immunities: charmed; frightened; grappled; paralyzed; petrified; prone; restrained; stunned

Senses: Darkvision 60 ft., Passive Perception 9

CR: 2 (XP 450; PB +2)

Habitat: Desert, Forest, Grassland, Hill, Mountain, Swamp, Underdark, Urban

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 creature. The swarm can't regain Hit Points or gain Temporary Hit Points.

Actions

Swarm of Proboscises.

Melee Attack Roll: +5, reach 5 ft. Hit: 14 (2d10 + 3) Piercing damage, or 8 (1d10 + 3) Piercing damage if the swarm is Bloodied. If the target is a Medium or smaller creature in the swarm's space, the target has the Grappled condition (escape DC 13). Until the grapple ends, the target takes 7 (2d6) Necrotic damage at the end of each of its turns.

Find this creature in the encounter builder

Swarm of Stirges

Source: Monster Manual (2025), p. 299 - Licenses and attribution