Plague Rat Swarm in Dungeons & Dragons 5e
Homebrew
Plague Rat Swarm CR: 1/2
Medium undead, rodent, unaligned
Armor Class: 12
Hit Points: 24
Speed:
30 ft
, climb: 20 ft
STR
9 -1
DEX
14 +2
CON
12 +1
INT
2 -4
WIS
10 +0
CHA
3 -4
Skills:
Swarm
The swarm can occupy another creature’s space and vice versa. The swarm can move through any opening large enough for a Tiny rat. The swarm cannot regain hit points or gain temporary hit points.Diseased Bodies
A creature that starts its turn in the swarm’s space must succeed on a DC 11 Constitution saving throw or take 2 poison damagDamage Resistances: Bludgeoning, Piercing, Slashing
Condition Immunities: Charmed, Frightened, Grappled, Paralyzed, Petrified, Prone, Restrained, Stunned, Poisoned
Senses: Darkvision 30 ft., passive Perception 10
Challenge Rating: 1/2
Actions
Bites
Melee Weapon Attack: +4 to hit, reach 0 ft., one creature in the swarm’s space. Hit: 10 piercing damage, or 5 piercing damage if the swarm has half its hit points or fewer. The target must succeed on a DC 11 Constitution saving throw or become poisoned until the end of its next turn.A mass of diseased rats drawn to infected grain. Their eyes are milky, their bodies twitch, and many are already half-dead. They spill from grain sacks, cellars, wagons, and sewer drains.
World Anvil: The Ultimate Worldbuilding Toolset & RPG Campaign Manager
Created for Dungeon Masters and Game Masters, World Anvil has everything you need to build your own homebrew RPG campaign setting, and run your games, either online or around the table!
- Speed up prep with a whole library of community statblocks you can copy (and edit!)
- Enthrall your players with interactive maps, timelines, and a whole wiki of your world
- Keep track of NPCs, PC character sheets, monster stats, treasure, journals, notes and more
- Quickly look up essential info with session notes, campaign map markers, and bookmarked lore at your fingertips
- Build your own campaign setting, or expand a prewritten campaign, with expertly created worldbuilding templates and prompts
- Control who sees what in your worldbuilding wiki with secrets and subscriber groups
- Collaborate with players and GMs to build the campaign setting of your dreams
- NEVER lose your notes!
GET STARTED TODAY!
Take the first step. Create your account. Your world and characters await!
100+ RPG systems
Find your way!
Resources
WHO WE ARE
LEGAL
Listen to our Podcast
by 3 Armored Kittens · Prodromos v.1.1 - World Anvil 0.9.15.049 © 2017-2025 [en] | Anvil Time: 00:23, May 14 2026