Putting It Together
You've seen each piece of Horror design on its own. Now let's walk through building one from start to finish, following the steps in order so you can see how the tables, derived stats, traits, and abilities lock together into a single, table-ready creature.
We'll build a low-level ambush predator: a cryptid that stalks lonely backroads and hunts anything that wanders too far from the light.
Step 1: Concept and Level
Our Horror is the Hollow Stag, a gaunt, too-tall deer with charred antlers and a ring of pale eyes where its face should be. It ambushes lone travelers, scatters them with a keening cry, then runs down the stragglers. We want it to threaten a starting party without overwhelming them, so we'll make it a level 3 Solo.
Step 2: Type, Size, and Movement
It's a creature of myth and backroad legend, so it's a Cryptid. Its towering frame makes it Large (a 2x2x2 cube), and it's built to chase, so we'll give it a Speed of 40 ft. It communicates only in guttural cries and the snapping of branches; it has no spoken language.
Step 3: Attributes and Derived Stats
A level 3 Horror has a Core Attribute of 14 and a Core Modifier (CM) of 2. An ambush hunter lives or dies on speed and timing, so its core attribute is Dexterity. We distribute the rest by priority (Core Attribute minus 2, 3, 3, 4, 4):
| Strength | Durability | Intellect | Awareness | Dexterity | Charm |
|---|---|---|---|---|---|
| 11 | 11 | 10 | 12 | 14 | 10 |
| 0 | 0 | 0 | 1 | 2 | 0 |
From the CM we read off the two derived stats once and reuse them everywhere:
- Attack Modifier (AM): equal to CM, so +2.
- Core Threshold (CT): 11 + CM, so 13.
Step 4: Hit Threshold, Pace, and HP Pool
The level 3 table suggests a Hit Threshold of 13. The Hollow Stag is fast but big and reckless, so we'll leave it at the table value. Its Pace is rolled in play ( + Dex mod + Awn mod, a +3 here).
As a Solo, it claims the entire HP pool for its level. The level 3 base is 46, plus a number of equal to its CM (2):
HP Pool = 46 + 2d6
The Hollow Stag
| Strength | Durability | Intellect | Awareness | Dexterity | Charm |
|---|---|---|---|---|---|
| 11 | 11 | 10 | 12 | 14 | 10 |
| 0 | 0 | 0 | 1 | 2 | 0 |
| Level: 3 (Solo) | Type: Cryptid |
| Hit Threshold: 13 | Speed: 40 ft. |
| HP Pool: 46 + 2d6 | Size: Large |
| Core Threshold: 13 | Attack Modifier: +2 |
A gaunt, too-tall stag with smoke-black antlers and a crown of pale, unblinking eyes. The Hollow Stag stands motionless among the trees until the moment it doesn't, and by then it is already upon you.
Traits
-
Ambush Predator: The Hollow Stag has edge on attack rolls against any creature that has not yet taken a turn in the current combat.
-
Unnatural Stillness: When the Stag does not move on its turn, it has edge on sneak rolls and cannot be detected by sound until it acts again.
Abilities
Goring Charge
| Casting Time | Range | Charges | Damage Dice | Damage Type |
|---|---|---|---|---|
| 1 Action | 5 ft. | CM | D8 D8 | Piercing |
The Stag lowers its antlers and drives forward. Make an attack roll, adding the Stag's AM, against the target's Hit Threshold. On a hit, the target takes 2d8 piercing damage, and a Medium or smaller target must make a Strength check against the Stag's CT or be knocked Prone.
Keening Cry
| Casting Time | Range | Charges | Damage Dice | Damage Type |
|---|---|---|---|---|
| 1 Action | 15 ft. Sphere | CM | D6 D6 | Mental |
The Stag throws back its head and screams with a hundred voices. Every creature in the sphere must make a Charm check against the Stag's CT. On a failure, they take 2d6 mental damage and are Terrified until the end of their next turn.
Melt Into Dusk
| Casting Time | Range | Charges | Damage Dice | Damage Type |
|---|---|---|---|---|
| 1 Bonus Action | Self | CM | - | - |
The Stag steps sideways into the failing light and is gone. It becomes Invisible until the start of its next turn or until it makes an attack, whichever comes first.
Weaknesses
-
Sunlight Vulnerability: The Hollow Stag belongs to the dark. While exposed to direct sunlight, it takes 1d6 true damage at the start of each of its turns and cannot use Melt Into Dusk.
-
Warded Ground: The Stag cannot cross an unbroken line of salt or iron filings. A clever party can pen it in, or carve a safe path through its hunting ground.
Notice that every number on the Stag traces back to a single choice: its level. The level set the Core Attribute, which set the CM, which in turn set the AM, the CT, the ability charges, and the size of the HP pool. Change the level, and the whole creature rescales with it. That's the quickest way to drop a Horror into a higher- or lower-level game without rebuilding it from scratch.
This is a complete, ready-to-run Horror, but it's still just a starting point. Swap the Keening Cry for a web of grasping roots, give it a second weakness tied to your campaign's lore, or raise its Hit Threshold to make it a frustrating, flickering target. The framework keeps it balanced; your imagination makes it terrifying.