Bone Swarm

Large swarm, chaotic evil

Armor Class

17 (natural armor)

Hit Points

198 (36d10)

Speed

20 ft., fly 60 ft.

STR

22 (+6)

DEX

18 (+4)

CON

10 (+0)

INT

9 (-1)

WIS

15 (+2)

CHA

20 (+5)

Damage Immunities

poison

Damage Resistances

piercing and slashing from nonmagical weapons

Damage Vulnerabilities

bludgeoning

Condition Immunities

charmed, exhaustion, frightened, paralyzed, poisoned, prone, restrained, stunned

Senses

darkvision 60 ft., passive Perception 16

Saving Throws

Dex +8, Wis +6, Cha +9

Skills

Acrobatics +8, Perception +6, Stealth +8

Languages

Common, Void Speech

Challenge

10 (5900 XP)

Strength of Bone. A bone swarm can choose to deal bludgeoning, piercing, or slashing damage, and adds 1.5x its Strength bonus on swarm damage rolls as bits and pieces of broken skeletons claw, bite, stab, and slam at the victim.

Swarm. The swarm can occupy another creature’s space and vice versa, and the swarm can move through any opening large enough for a human skull. The swarm can’t regain hit points or gain temporary hit points.

Actions

Multiattack. The bone swarm can attack every hostile creature in its space with swirling bones.

Swirling Bones. Melee Weapon Attack: +10 to hit, reach 0 ft., one creature in the swarm’s space. Hit: 31 (5d8 + 9) bludgeoning, piercing, or slashing damage (includes Strength of Bone special ability).

Death’s Embrace (Recharge 5-6). Melee Weapon Attack: +10 to hit, reach 0 ft., one creature in the swarm’s space. Hit: the target is grappled (escape DC 16) and enveloped within the swarm’s bones. The swarm can force the creature to move at its normal speed wherever the bone swarm wishes. Any non-area attack against the bone swarm has a 50 percent chance of hitting a creature grappled in Death’s Embrace instead.