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Swarm of Tiny Horrors in Dungeons & Dragons 5e

Swarm of Tiny Horrors CR: 3

Medium swarm of tiny eldritch creatures, unaligned
Armor Class: 14
Hit Points: 42hp (8d8+6) 8d8+6
Speed: 0 ft , fly: 30 ft

STR

10 +0

DEX

18 +4

CON

11 +0

INT

1 -5

WIS

10 +0

CHA

4 -3

Damage Vulnerabilities: radiant
Damage Resistances: piercing, bludgeoning, slashing
Damage Immunities: psychic
Condition Immunities: charmed, frightened, grappled, paralyzed, petrified, prone, restrained, stunned
Senses: darkvision 60ft., passive Perception 10
Languages: None
Challenge Rating: 3

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 horror. The swarm can't regain hit points or gain temporary hit points.   Blurry Presence. Creatures have a disadvantage of perception checks relying on sight on this creature.   Eldritch Body. When directly touched by a creature, that creature takes 1d8 psychic damage.    Veil Walk. As a bonus action the swarm can travel on the veil, disappearing from the material world. They can move through objects and creatures as if they were difficult terrain. This ends at the start of their next turn.

Actions

Bites: Melee Weapon Attack: +6 to hit, reach 0 ft., one creature in the swarms space. Hit: 10 (2d8) psychic damage, or 5 (1d8) psychic damage if the swarm has half it's hit points or fewer. The target must make a DC 10 intelligence saving throw, taking 14 (4d6) psychic damage on a failed save, or half as much on a successful one.

Although not considered intelligent tiny horrors have a tendency to create swarms that can overwhelm the average fighter.

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