Harbinger of the Void | Free D&D 5e Monster
There are monsters… and then there are things your players will never forget.
The Harbinger of the Void falls squarely into that second category.
This is not just another high-level enemy you throw into a dungeon. This is a campaign-defining villain—a creature that twists minds, leads cults, and foreshadows something far worse on the horizon. If you’re looking to introduce cosmic horror, eldritch influence, or an escalating threat that your players don’t fully understand yet, this is exactly the kind of monster you want in your game.
Let’s break it down.
What Is the Harbinger of the Void?
Some mortals push too far.
They dig too deeply into the planes, chasing forbidden knowledge, until they uncover something they were never meant to see: the void. And when they do, they are no longer entirely their own.
These unfortunate souls are claimed by the ch’thuun—transformed into something else entirely. Something purposeful. Something terrifying.
Then they are sent back. Not as explorers. Not as survivors. But as messengers.
The Harbinger of the Void returns to the material world as a prophet of annihilation, tasked with preparing the way for the coming of the regis and the devouring swarm. They gather followers, form cults, and slowly corrupt everything around them, all while spreading the influence of the void.
If your campaign needs a villain who isn’t just powerful—but unsettling, manipulative, and deeply tied to a larger cosmic threat—this is it.
Harbinger of the Void
Medium humanoid (any), lawful evil
Armor Class 16 (natural armor)
Hit Points 212 (25d8 + 100)
Speed 30 ft., fly 40 ft., climb 30 ft.
|
STR |
DEX |
CON |
INT |
WIS |
CHA |
|
15 (+2) |
17 (+3) |
19 (+4) |
19 (+4) |
14 (+2) |
17 (+3) |
Saving Throws Con +10, Int +10, Wis +8, Cha +9
Skills Arcana +10, Deception +9, Persuasion +9, Perception +8
Damage Resistances bludgeoning, piercing, and slashing from nonmagical attacks
Condition Immunities charmed, frightened
Senses darkvision 120 ft., passive Perception 19
Languages Common, Deep Speech, telepathy 120 ft.
Challenge 17 (18,000 XP) Proficiency Bonus +6
Innate Spellcasting (Psionics). The harbinger of the void's innate spellcasting ability is Intelligence (spell save DC 18). It can cast the following spells, requiring no components:
3/day: detect thoughts, vicious mockery
3/day each: clairvoyance, confusion, fear, suggestion
1/day each: dominate person, mass suggestion
Legendary Resistance (1/Day). If the harbinger of the void fails a saving throw, it can choose to succeed instead.
Magic Resistance. The harbinger of the void has advantage on saving throws against spells and other magical effects.
Actions
Multiattack. The harbinger of the void makes two claw attacks.
Claw. Melee Weapon Attack: +9 to hit, reach 5 ft., one target. Hit: 12 (2d8 + 3) slashing damage, and if the target is a creature, it also takes plus 18 (4d8) psychic damage.
Rend Psyche. Ranged Spell Attack: +10 to hit, range 60 ft., one creature. Hit: 26 (5d10 + 4) psychic damage, and the target must succeed on a DC 18 Intelligence saving throw or be forced to use its reaction to move as far as its speed allows away from the raver.
Psychic Burst (Recharge 5 - 6). The harbinger of the void causes an eruption of psychic energy in a 20-foot radius around a point that it can see. Each creature in the area must succeed on a DC 18 Intelligence saving throw or take 36 (8d8) psychic damage and be unable to take reactions until the end of the harbinger's next turn. A creature that succeeds on the save takes only half damage and doesn't lose its reaction.
Bonus Actions
Void Walk. The harbinger of the void teleports up to 60 feet to a space that it can see.
Reactions
Psychic Admonition (3/Day). When the harbinger of the void is hit with an attack by a creature that it can sense within 60 feet of it, it can force that creature to make a DC 18 Intelligence saving throw or take 22 (5d8) psychic damage. The target takes only half damage on a successful save.
2024 Enhanced Version (CR 19)
If you’re running higher-powered games or using updated 2024 rules, the Harbinger can be pushed even further into boss-level territory with a few key upgrades:
- Armor Class increased to 20
- Gains and additional 6 hit point dice (+51 HP)
- Legendary Resistance increased to 2/day
- Multiattack upgraded to three attacks using Claw and Rend Psyche in any combination
These changes elevate the creature from a dangerous encounter to a true endgame threat, capable of anchoring major story arcs or acting as a precursor to something even worse.
Want More Monsters Like This?
The Harbinger of the Void is just one of dozens of high-impact monsters, encounters, and tools designed to make your sessions more engaging with less prep.
In Lairs & Legends 3, you get:
- Powerful, table-ready monsters like this one
- Plug-and-play encounters you can drop into any campaign
- Tools to create more dynamic, memorable sessions
👉 You can still preorder Lairs & Legends 3 right now
How to Use the Harbinger in Your Game
The biggest mistake you can make with a monster like this is treating it like a random encounter. Don’t do that.
The Harbinger of the Void works best when it’s introduced long before the players fight it. Let its influence spread. Let the players hear rumors. Let them encounter cultists, strange behavior, and unsettling events that hint at something larger.
By the time they finally face the Harbinger, it should feel like the culmination of a growing threat—not just another fight.
This creature excels in:
- Cult leader roles
- Recurring villains who escape early encounters
- Manipulators working behind the scenes
- Heralds of a much larger cosmic invasion
And perhaps most importantly, it introduces a question your players won’t be able to ignore:
If this is just the messenger… what’s coming next?
Final Thoughts
The Harbinger of the Void is more than just a stat block—it’s a storytelling tool. It gives you a way to introduce cosmic horror, psychological pressure, and long-term threats into your campaign in a way that feels cohesive and escalating.
Use it to challenge your players, not just mechanically, but mentally. Force them to question what they know, who they trust, and whether they’re truly prepared for what lies ahead.
Because once the Harbinger arrives…it means something far worse is already on the way.
If you want more monsters, encounters, and ready-to-run content like the Harbinger of the Void, you can still preorder Lairs & Legends 3.
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