Swarming Bones
The swarm can occupy another creature space and vice versa, and it can move through openings at least 1 inch wide.
Bone Swarm
Bone Swarm 5e reference with CR 6, type, stat block details, token resources, terrain tools, fear hooks, and monster hunt generation.
CR 6UndeadStat Block + PDFHunt Ready
Original 5e-Compatible Stat BlockDownload PDF
Overview
A bone swarm is a whirling undead storm of skeletal fragments, a tolerance level 1 inclusion built around attrition and necrotic chaos.
Quick 5e Answer
Bone Swarm CR, type, stat block, and table tools
Bone Swarm is a CR 6 undead for D&D 5e. This page includes AC 16, HP 119 (14d10 + 42), a ready stat block, a downloadable PDF, and connected encounter tools.
CR6
TypeUndead
Stat BlockOriginal 5e-Compatible Stat Block
PDF SheetAvailable
AC16
HP119 (14d10 + 42)
Original 5e-Compatible Stat Block
Bone Swarm
Large, Undead, Neutral Evil
Original 5e5e-compatiblemonster-almanac-original-v1PDF Ready
This is an original Monster Almanac 5e-compatible stat block, not an official SRD stat block.
Armor Class16
Hit Points119 (14d10 + 42)
Challenge6 • 2,300 XP
Proficiency+3
- Speed
- Walk 30 ft., Climb 30 ft.
- Initiative
- +3
- Saving Throws
- Con +6, Dex +6
- Skills
- Perception +4
- Damage Vulnerabilities
- Bludgeoning
- Damage Resistances
- Necrotic, Piercing, Slashing
- Damage Immunities
- Poison
- Condition Immunities
- Charmed, Exhaustion, Frightened, Poisoned, Prone
- Senses
- Darkvision 60 ft.; Passive Perception 14
- Passive Perception
- 14
- Languages
- Understands the languages of its remains but cannot speak
STR16+3
DEX16+3
CON16+3
INT5-3
WIS12+1
CHA8-1
Traits
Rattle of the Grave
A creature that starts its turn in the swarm space has Disadvantage on the first Wisdom saving throw it makes before the start of its next turn.
Actions
Bone Grinder
Melee Attack Roll: +6, reach 0 ft. Hit: 27 (6d8) Piercing damage, or 13 (3d8) Piercing damage if the swarm has half its Hit Points or fewer.
Jagged Surge (Recharge 5-6)
Dexterity Saving Throw: creatures in a 20-foot Line. Failure: 28 (8d6) Piercing damage and the target falls Prone. Success: Half damage and no Prone.
Reactions
Collapse and Reform
When hit by an attack, the swarm moves up to 10 feet without provoking Opportunity Attacks.
Generate Terrain
Dungeon
Base + optional customizer
Morning • Subterranean Draft • Tight Corridors • Cracked Tiles • Iron Portcullis
Ruins
Base + optional customizer
Morning • Clear • Scattered Walls • Rubble Fields • Fallen Statue
Underground
Base + optional customizer
Morning • Subterranean Draft • Earth Tunnels • Packed Earth • Collapsed Supports
Note: These resource links work best when you are logged in to ChatGPT in your browser.
Bone Swarm Token, Portrait, Chatbot, Terrain, Fear Hooks, Hunt Generator, and D&D 5e Resources
Bone Swarm 5e reference: CR 6 undead, AC 16, HP 119 (14d10 + 42), PDF sheet, token, portrait, terrain, fear hooks, and hunt tools for Dungeon, Ruins,… This page is part of the complete Monster Almanac stat block library. It includes a original 5e-compatible stat block with a downloadable PDF sheet, plus connected prep tools. Use this Monster Almanac page to move from search result to table prep: read the quick 5e reference, open the stat block, download the PDF when available, generate a token or portrait prompt, build matching terrain, create a monster-bound fear hook, and turn Bone Swarm into a focused hunt.
Using Bone Swarm in play
Bone Swarm can be used in Dungeon, Ruins, Underground when you want a CR 6 undead that helps shape combat pressure, exploration tension, or narrative danger.
Bone Swarm works well as a supporting threat, recurring danger, or encounter-building piece inside a larger scene.
The attached original 5e-compatible stat block gives you a table-ready rules reference, and the PDF button keeps the sheet easy to print or save before the session.
This makes Bone Swarm useful not only as a monster reference, but also as a scene-shaping piece for travel danger, dungeon pressure, wilderness discovery, or a stronger narrative threat.
Why this monster is useful
- Fits naturally into Dungeon, Ruins, Underground.
- Works as a CR 6 option for encounter building and pacing.
- Connects directly with a stat block, downloadable PDF, portrait, token, chatbot, terrain, fear hook, and hunt resources.
- Helps game masters move from reference to actual tabletop use more quickly.
Quick ideas for scene building
- Use Bone Swarm as a wandering threat tied to the local environment.
- Pair the monster with terrain from the environments shown above.
- Add an NPC witness, hunter, scholar, survivor, or fearful character to frame the danger.
- Open the chatbot resource to give the creature more roleplay or lore flavor.
- Use the hunt generator to turn this monster into a focused adventure hook.
Bone Swarm 5e quick FAQ
What CR is Bone Swarm in D&D 5e?
Bone Swarm is listed in Monster Almanac as a CR 6 undead.
What type of monster is Bone Swarm?
Bone Swarm is listed as a undead.
Does Bone Swarm have a 5e stat block?
Yes. This page includes a original 5e-compatible stat block and a downloadable PDF sheet.
Can I generate a token or hunt for Bone Swarm?
Yes. This page links to Bone Swarm token, portrait, chatbot, terrain, fear hook, and monster hunt tools for fast D&D prep.
Continue building the scene
After choosing Bone Swarm, the next step is usually to connect the monster with a place, an encounter shape, a supporting cast, or a character who fears it. Use the tools below to keep building without leaving the Monster Almanac workflow.