Death Butterfly Swarm 2014

CR 4 beast

Large beast, chaotic evil

Armor Class: 15 (natural armor)
Hit Points: 60 (11d10)
Speed: 5 ft., fly 40 ft. (hover)

STR1 (-5)

DEX13 (+1)

CON10 (+0)

INT1 (-5)

WIS12 (+1)

CHA15 (+2)

Saving Throws
Skills
Vulnerabilities: cold, fire
Resistances: bludgeoning, piercing, slashing
Condition Immunities: charmed, frightened, paralyzed, petrified, prone, restrained, petrified
Senses: darkvision 60 ft., passive Perception 11
Languages: —
Challenge: 4 (1,100 XP) · Proficiency Bonus +2

Potent Poison.

The death butterfly swarm's poison affects corporeal undead who are otherwise immune to poison.

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

Weight of Wings.

A creature in a space occupied by the death butterfly swarm has its speed reduced by half, and must succeed on a DC 13 Dexterity saving throw or become blinded. Both effects end when the creature doesn't share a space with the swarm at the end of the creature's turn. If a creature succeeds on the saving throw, it is immune to the swarm's blindness (but not the speed reduction) for 24 hours.

Actions

Multiattack.

The swarm makes a Bite attack against every target in its spaces.

Bites.

Melee Weapon Attack: +3 to hit, reach 0 ft., every target in the swarm's space. Hit: 22 (6d6 + 1) piercing damage, or 11 (3d6 + 1) piercing damage if the swarm has half of its hit points or fewer. The target also takes 10 (3d6) poison damage and becomes poisoned for 1d4 rounds; a successful DC 13 Constitution saving throw reduces poison damage by half and prevents the poisoned condition.

Environments: Forest or Jungle, Grassland or Plains

Other versions

2014 Death Butterfly Swarm · Tome of Beasts (2023)

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