Swarm of Bats — D&D 5e Monster Stats (CR 1/4)

Q: What are Swarm of Bats's AC and HP in D&D 5e?

Swarm of Bats has an Armor Class of 12 and 22 hit points (5d8).

Q: What Challenge Rating is a Swarm of Bats?

Swarm of Bats is CR 1/4, worth 50 XP — roughly a fair fight for a party of four characters of a similar level.

Q: What type of creature is Swarm of Bats?

Swarm of Bats is a medium swarm of tiny beasts, alignment unaligned.

Armor Class12

Hit Points22 (5d8)

Speed0 ft., fly 30 ft.

ChallengeCR 1/4 (50 XP)

STR

5

(-3)

DEX

15

(+2)

CON

10

(+0)

INT

2

(-4)

WIS

12

(+1)

CHA

4

(-3)

Resistancesbludgeoning, piercing, slashing

Cond. ImmuneCharmed, Frightened, Grappled, Paralyzed, Petrified, Prone, Restrained, Stunned

Sensesblindsight 60 ft., passive Perception 11

Special Abilities

Echolocation. The swarm can't use its blindsight while deafened.

Keen Hearing. The swarm has advantage on Wisdom (Perception) checks that rely on hearing.

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 bat. The swarm can't regain hit points or gain temporary hit points.

Actions

Bites. Melee Weapon Attack: +4 to hit, reach 0 ft., one creature in the swarm's space. Hit: 5 (2d4) piercing damage, or 2 (1d4) piercing damage if the swarm has half of its hit points or fewer.

Running Swarm of Bats in an encounter

As a CR 1/4 threat worth 50 XP, Swarm of Bats is a fair challenge for a party of four at a comparable level. With no legendary actions it works best in numbers or paired with support, where its CR 1/4 rating won't be burned down in a single round. Use the XP value with the encounter builder to slot it into a balanced fight.

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