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Cobbleswarm

Medium · Monstrosity · CR 2 · Unaligned

Source. Tome of Beasts

15 (natural armor)

36 (8d8)

Ability Scores

Core attributes and their modifiers.

STR

DEX

CON

INT

-3

WIS

CHA

-3

Overview

Category Monsters

Size Medium

Type Monstrosity

Alignment Unaligned

XP 450

Initiative Bonus +0

Movement

Walk 30 ft (9.1 m)

Swim 15 ft (4.6 m)

Climb 15 ft (4.6 m)

Crawl 15 ft (4.6 m)

Senses

Passive Perception 11

Languages

Resistances & Immunities

Damage Resistances

bludgeoning, piercing, slashing

Condition Immunities

charmed, frightened, paralyzed, petrified, prone, stunned

Environments

Caves Ruins Underworld Urban

Traits

False Appearance

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

Shift and Tumble

As a bonus action, the swarm can push a prone creature whose space it occupies 5 feet.

Shifting Floor

Whenever the swarm moves into a creature's space or starts its turn in another creature's space, that other creature must make a successful DC 13 Dexterity saving throw or fall prone. A prone creature must make a successful DC 13 Dexterity (Acrobatics) check to stand up in a space occupied by the swarm.

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

Actions

Stings

+3 to hit. Hit: 4d4 piercing damage.

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 its hit points or fewer.

About Cobbleswarm

Cobbleswarm is a medium monstrosity with a Challenge Rating of 2. It has a unaligned alignment.

In combat, this creature maintains an Armor Class of 15 and possesses 36 hit points (derived from 8d8).

Cobbleswarm has communication capabilities including -. This allows it to interact verbally with various creatures and characters.

GM Tips: Using Cobbleswarm

2 tips available

When using Cobbleswarm in your D&D 5e campaign, consider these tactical approaches:

Mid-level Encounter: Ideal for parties levels 3-8 as solo or small groups
Terrain Advantage: Use terrain to offset moderate combat abilities

Player Guide: Facing Cobbleswarm

2 strategies available

When your party encounters this creature, keep these strategies in mind:

Moderate Threat: Prepare standard combat tactics
Tactical Advantage: Use terrain and positioning

Encounter Building Calculator

Standard Party Encounter (4-5 characters):

This creature is a medium encounter for a party of 4 characters of level 2.

Solo Encounter:

A single character of level 4 (up to level 20) can face this creature in a medium to hard encounter.

Experience Point Thresholds:

Medium: 600 XP
Hard: 900 XP
Deadly: 1,200 XP

Based on D&D 5e Dungeon Master's Guide encounter building guidelines. CR roughly equals party level for medium encounters.

Frequently Asked Questions

What is the challenge rating of Cobbleswarm?: Cobbleswarm has a Challenge Rating of 2, making it appropriate for parties of level 2.0.
What type of creature is Cobbleswarm?: Cobbleswarm is a Medium Monstrosity, which affects how certain spells and abilities interact with it.
What languages does Cobbleswarm speak?: Cobbleswarm can communicate in -.