Cobbleswarm 2014

CR 2 monstrosity

Medium monstrosity, Unaligned

Armor Class: 15 (natural armor)
Hit Points: 36 (8d8)
Speed: 30 ft.

STR12 (+1)

DEX11 (+0)

CON11 (+0)

INT5 (-3)

WIS12 (+1)

CHA5 (-3)

Saving Throws
Skills
Resistances: bludgeoning, piercing, slashing
Condition Immunities: charmed, frightened, grappled, paralyzed, petrified, prone, restrained, stunned
Senses: passive Perception 11
Languages: —
Challenge: 2 (450 XP) · Proficiency Bonus +2

False Appearance.

While the cobbleswarm remains motionless, it is indistinguishable from normal stones.

Shifting Floor.

Whenever the cobbleswarm moves into a creature’s space or starts its turn in another creature’s space, the creature must succeed on a DC 13 Dexterity saving throw or fall prone. A prone creature must succeed on a DC 13 Dexterity (Acrobatics) check to stand up in a space occupied by the swarm.

Swarm.

The cobbleswarm can occupy another creature’s space and vice versa, and the swarm can move through any opening large enough for a Tiny stone. The swarm can’t regain hp or gain temporary hp.

Actions

Stings.

Melee Weapon Attack: +3 to hit, reach 0 ft., one target in the swarm's space. Hit: 15 (6d4) piercing damage, or 7 (3d4) piercing damage if the swarm has half its hp or fewer.

Bonus Actions

Shift and Tumble.

The cobbleswarm pushes a prone creature in its space up to 5 feet away from it.

Other versions

2014 Cobbleswarm · Tome of Beasts

Source: Tome of Beasts 1 (2023 Edition) (Kobold Press) · License: OPEN GAME LICENSE Version 1.0a details