Swarm of Lemures

Large Fiend (Devil), Lawful Evil

AC: 12

Initiative: -2 (8)

HP: 45 (6d10 + 12)

Speed: 40 ft.

STR: 14 (+2)
DEX: 7 (-2)
CON: 14 (+2)
INT: 1 (-5)
WIS: 12 (+1)
CHA: 3 (-4)

Resistances: bludgeoning; cold; piercing; slashing

Immunities: fire; poison

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

Senses: Darkvision 120 ft. (unimpeded by magical Darkness), Passive Perception 11

Languages: understands Infernal but can't speak

CR: 3 (XP 700; PB +2)

Habitat: Planar, Nine Hells

Hellish Restoration.

If the swarm dies in the Nine Hells, it revives with all its Hit Points in 1d10 days unless it is killed by a creature under the effects of a Bless spell or its remains are sprinkled with Holy Water.

Swarm.

The swarm can occupy another creature's space and vice versa, and the swarm can move through an opening large enough for a Medium creature. The swarm can't regain Hit Points or gain Temporary Hit Points.

Actions

Multiattack.

The swarm makes two Vile Slime attacks.

Vile Slime.

Melee Attack Roll: +4, reach 5 ft. Hit: 11 (2d8 + 2) Poison damage, or 9 (2d6 + 2) Poison damage if the swarm is Bloodied.

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Source: Monster Manual (2025), p. 194 - Licenses and attribution