Swarm of Gremishkas

Medium Monstrosity, Chaotic Evil

AC: 14

Initiative: +2 (12)

HP: 31 (7d4 + 14)

Speed: 30 ft.

STR
12 (+1)
DEX
14 (+2)
CON
15 (+2)
INT
11 (+0)
WIS
14 (+2)
CHA
4 (-3)

Resistances: bludgeoning; piercing; slashing

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

Senses: Darkvision 30 ft., Passive Perception 12

Languages: understands Common but can't speak

CR: 2 (XP 450; PB +2)

Habitat: Urban

Treasure: Arcana

Magic Resistance.

The gremishka has Advantage on saving throws against spells and other magical effects.

Swarm (Swarm Form Only).

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

Swarming Bites (Swarm Form Only).

Melee Attack Roll: +4, reach 5 ft. Hit: 12 (3d6 + 2) Piercing damage, or 9 (3d4 + 2) Piercing damage if the swarm is Bloodied, plus 7 (2d6) Force damage. If the target is attuned to any magic items, its Attunement to one item (DM's choice) ends.

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Swarm of Gremishkas

Source: Ravenloft: The Horrors Within, p. 249 - Licenses and attribution