Swarm of Stirges

Monster Manual (2025) p. 299

Size
Medium
Type
monstrosity
Alignment
unaligned
AC
14
Initiative
3
Hit Points
36 (8d8)
Speed
walk 10 ft., fly 40 ft.
Resistances
bludgeoning, piercing, slashing
Condition Immunities
charmed, frightened, grappled, paralyzed, petrified, prone, restrained, stunned
Senses
darkvision 60 ft.
Passive Perception
9
Challenge
2
Lineage
Stirge
Environment
desert, forest, grassland, hill, mountain, swamp, underdark, urban
STR
4
−3
DEX
16
+3
CON
11
+0
INT
2
−4
WIS
8
−1
CHA
6
−2

Traits

Proficiency Bonus

+2

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.

Other data

description

Stirges are bat-size vermin with dagger-length proboscises that attach to other creatures and drain life from them. Stirges are most active at night and hide in shadowy places during the day. If disturbed, they take flight and defend themselves. Roll on or choose a result from the Stirge Roosts table to inspire where stirges might lurk.

Stirge Roosts:

1d4Between Hunts, the Stirge Lurks In...
1The attic or furniture of a ruined building.
2A cave or narrow crevice.
3A hollow tree or thicket.
4The remains of a gigantic, dead creature.

Swarm of Stirges: Swarms of stirges sometimes form in swamps and Underdark caverns, draining livestock and any other creatures that can't escape them.