Beetle, Clacker Swarm 2014

CR 3 beast

Medium beast, unaligned

Armor Class: 14 (natural armor)
Hit Points: 36 (8d8)
Speed: 20 ft., climb 20 ft.

STR3 (-4)

DEX13 (+1)

CON10 (+0)

INT1 (-5)

WIS7 (-2)

CHA1 (-5)

Saving Throws
Skills: Perception -2
Condition Immunities: charmed, frightened, paralyzed, petrified, prone, restrained, stunned
Senses: blindsight 30 ft., passive Perception 8
Languages: —
Challenge: 3 (700 XP) · Proficiency Bonus +2

Constant Clacking.

A creature that starts its turn in the swarm’s space takes 5 (1d10) thunder.

Swarm.

Can occupy another creature’s space and vice versa and swarm can move through any opening large enough for a Tiny creature. Swarm can’t regain hp or gain temp hp.

Source: Tome of Beasts 3 (Kobold Press) · License: OPEN GAME LICENSE Version 1.0a details