Swarm Form
The swarm can occupy another creature space and vice versa, and it can move through openings at least 1 inch wide.
Rune Swarm
Rune Swarm 5e reference with CR 4, type, stat block details, token resources, terrain tools, fear hooks, and monster hunt generation.
CR 4ConstructStat Block + PDFHunt Ready
Original 5e-Compatible Stat BlockDownload PDF
Overview
A rune swarm is a mass of living glyphs or carved fragments, a tolerance level 2 inclusion built for magical harassment and shape pressure.
Quick 5e Answer
Rune Swarm CR, type, stat block, and table tools
Rune Swarm is a CR 4 construct for D&D 5e. This page includes AC 15, HP 72 (16d8), a ready stat block, a downloadable PDF, and connected encounter tools.
CR4
TypeConstruct
Stat BlockOriginal 5e-Compatible Stat Block
PDF SheetAvailable
AC15
HP72 (16d8)
Original 5e-Compatible Stat Block
Rune Swarm
Medium, Construct (Swarm), Unaligned
Original 5e5e-compatiblemonster-almanac-original-v1PDF Ready
This is an original Monster Almanac 5e-compatible stat block, not an official SRD stat block.
Armor Class15
Hit Points72 (16d8)
Challenge4 • 1,100 XP
Proficiency+2
- Speed
- Fly 30 ft. (hover)
- Initiative
- +2
- Saving Throws
- Dex +4, Int +3
- Skills
- Arcana +3, Perception +3
- Damage Resistances
- Bludgeoning, Piercing, Slashing
- Damage Immunities
- Poison, Psychic
- Condition Immunities
- Charmed, Exhaustion, Frightened, Grappled, Paralyzed, Petrified, Poisoned, Prone, Restrained
- Senses
- Darkvision 60 ft.; Passive Perception 13
- Passive Perception
- 13
- Languages
- Understands the script that created it but cannot speak
STR6-2
DEX15+2
CON10+0
INT12+1
WIS12+1
CHA8-1
Traits
Living Glyphs
The swarm sheds Dim Light in a 10-foot radius and has Advantage on saving throws against spells.
Actions
Rune Cut
Melee Spell Attack: +5, reach 0 ft. Hit: 18 (4d8) Force damage, or 9 (2d8) Force damage if the swarm has half its Hit Points or fewer.
Scramble Formula (Recharge 5-6)
Intelligence Saving Throw: creatures in the swarm space. Failure: 14 (4d6) Psychic damage and the target cannot cast spells with verbal components until the end of its next turn.
Reactions
Counter-Sigil
When a creature the swarm can see within 30 feet casts a spell, the swarm imposes Disadvantage on one attack roll made by that spell.
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
Urban
Base + optional customizer
Morning • Clear • Tight Alleys • Carts and Stalls • Clocktower Base
Note: These resource links work best when you are logged in to ChatGPT in your browser.
Rune Swarm Token, Portrait, Chatbot, Terrain, Fear Hooks, Hunt Generator, and D&D 5e Resources
Rune Swarm 5e reference: CR 4 construct, AC 15, HP 72 (16d8), PDF sheet, token, portrait, terrain, fear hooks, and hunt tools for Dungeon, Ruins, Urban. 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 Rune Swarm into a focused hunt.
Using Rune Swarm in play
Rune Swarm can be used in Dungeon, Ruins, Urban when you want a CR 4 construct that helps shape combat pressure, exploration tension, or narrative danger.
Rune 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 Rune 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, Urban.
- Works as a CR 4 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 Rune 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.
Rune Swarm 5e quick FAQ
What CR is Rune Swarm in D&D 5e?
Rune Swarm is listed in Monster Almanac as a CR 4 construct.
What type of monster is Rune Swarm?
Rune Swarm is listed as a construct.
Does Rune 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 Rune Swarm?
Yes. This page links to Rune Swarm token, portrait, chatbot, terrain, fear hook, and monster hunt tools for fast D&D prep.
Continue building the scene
After choosing Rune 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.