Quartz 5

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  • Swarm of Centipedes
    created: 2026-03-09T12:15:33.901-04:00
    modified: 2026-03-09T12:15:33.901-04:00
    published: 2026-03-09T12:15:33.901-04:00
    tags:
  • ttrpg-cli/compendium/src/5e/mm
  • ttrpg-cli/monster/cr/1-2
  • ttrpg-cli/monster/environment/desert
  • ttrpg-cli/monster/environment/forest
  • ttrpg-cli/monster/environment/grassland
  • ttrpg-cli/monster/environment/hill
  • ttrpg-cli/monster/environment/swamp
  • ttrpg-cli/monster/environment/underdark
  • ttrpg-cli/monster/environment/urban
  • ttrpg-cli/monster/size/medium
  • ttrpg-cli/monster/type/beast
    cssclasses:
  • json5e-monster
    obsidianUIMode: preview

Swarm of Centipedes

Source: Monster Manual p. 338. Available in the SRD

The Nature of Swarms

The swarms presented here aren’t ordinary or benign assemblies of little creatures. They form as a result of some sinister or unwholesome influence. A vampire can summon swarms of bats and rats from the darkest corners of the night, while the very presence of a mummy lord can cause scarab beetles to boil up from the sand-filled depths of its tomb. A hag might have the power to turn swarms of ravens against her enemies, while a yuan-ti abomination might have swarms of poisonous snakes slithering in its wake. Even druids can’t charm these swarms, and their aggressiveness is borderline unnatural.

title: Swarm of Centipedes
![](Mechanics/CLI/bestiary/beast/token/swarm-of-centipedes.webp#token)
*Medium beast, Unaligned*
 
- **Armor Class** 12 (natural armor)
- **Hit Points** 22 (`5d8`) 
- **Speed** 20 ft., climb 20 ft.
 
|STR|DEX|CON|INT|WIS|CHA|
|:---:|:---:|:---:|:---:|:---:|:---:|
| 3 (-4)|13 (+1)|10 (+0)| 1 (-5)| 7 (-2)| 1 (-5)|
 
- **Proficiency Bonus** +2
- **Saving Throws** ⏤
- **Skills** ⏤
- **Senses** [blindsight](Mechanics/CLI/rules/senses.md#Blindsight) 10 ft., passive Perception 8
- **Damage Resistances** bludgeoning, piercing, slashing
- **Condition Immunities** [charmed](Mechanics/CLI/rules/conditions.md#Charmed), [frightened](Mechanics/CLI/rules/conditions.md#Frightened), [grappled](Mechanics/CLI/rules/conditions.md#Grappled), [paralyzed](Mechanics/CLI/rules/conditions.md#Paralyzed), [petrified](Mechanics/CLI/rules/conditions.md#Petrified), [prone](Mechanics/CLI/rules/conditions.md#Prone), [restrained](Mechanics/CLI/rules/conditions.md#Restrained), [stunned](Mechanics/CLI/rules/conditions.md#Stunned)
- **Languages** —
- **Challenge** 1/2
 
## Traits
 
***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 insect. The swarm can't regain hit points or gain temporary hit points.
 
## Actions
 
***Bites.*** *Melee Weapon Attack:* `+3` to hit, reach 0 ft., one target in the swarm's space. *Hit:* 10 (`4d4`) piercing damage, or 5 (`2d4`) piercing damage if the swarm has half of its hit points or fewer.
 
A creature reduced to 0 hit points by a swarm of centipedes is stable but [poisoned](Mechanics/CLI/rules/conditions.md#Poisoned) for 1 hour, even after regaining hit points, and [paralyzed](Mechanics/CLI/rules/conditions.md#Paralyzed) while [poisoned](Mechanics/CLI/rules/conditions.md#Poisoned) in this way.

Environment

underdark, grassland, forest, swamp, hill, urban, desert

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