Skip to content
CreatePricing
The Threshold That Watches - AI-generated fantasy Hazard

The Threshold That Watches

The threshold watches before it strikes. When a creature crosses without first touching the carved eye, the stone eye snaps shut and releases a pulse of invasive magic. The victim hears a whisper in a familiar voice, then feels every nearby shadow tug toward them. The hazard is quick, unsettling, and easy to understand once the party learns what it wants.

Hazard EntryMagical threshold trapLevel3Simple

The Threshold That Watches

3LevelUncommonRarityCrypts, abandoned manors, forgotten shrines, wizard towers, and any guarded passage where secrecy matters.Environment
MagicalPsychicThresholdFear
Level3
|
HPN/A for D&D 5E
|
AC13
|
TypeMagical threshold trap
|
ComplexitySimple
|
RarityUncommon

Defenses

AC13
HardN/A for D&D 5E
HPN/A for D&D 5E
BT N/A for D&D 5E
Fort+N/A for D&D 5E
Ref+N/A for D&D 5E
Will+N/A for D&D 5E
Immune
Poison damage, Psychic damage, The charmed condition, The frightened condition
Resist
Damage from nonmagical weapons, if the hazard is attacked as an object
Weak
The carved eye is vulnerable to bright sunlight or daylight, which suppresses the hazard for 1 minute., The hazard cannot trigger while the threshold is covered by a continuous sheet of lead, though the covering may make the passage difficult to use.
MagicalPsychicThresholdFear

Detection

PerDC 13 Wisdom (Perception) or Intelligence (Investigation) to notice the carved eye is slightly misaligned, the copper wiring in the mortar, and the faint smell of hot metal.
StlDC 13 before activation; the hazard is built into the threshold and does not move.
InitThe hazard acts immediately when triggered and has no initiative count.

A cracked stone threshold bears a shallow carving of an open eye. Fine copper wires run through the mortar and vanish into the walls. When the hazard is active, the carved eye seems wet, as though it is slowly blinking.

Standard Engagement

Trigger

The hazard triggers when a creature crosses the threshold without first touching the carved eye and speaking a secret aloud.

Routine

When triggered, the eye closes, emits a pulse of amber light, and targets the triggering creature with Stolen Glance. The hazard has no further action or routine.

Reset

The hazard resets at the start of the next round after triggering. If disabled or jammed, it remains inactive until repaired or the jamming object is removed.

Stolen Glance

The triggering creature must make a DC 13 Wisdom saving throw. On a failed save, it takes 2d6 psychic damage and is frightened of the nearest creature until the end of its next turn. On a successful save, it takes half as much damage and is not frightened.

Confession Opens the Way

A creature that deliberately touches the carved eye and speaks a secret aloud before crossing is not affected by the hazard. The secret need not be true, but it must be specific enough to reveal something the speaker would normally keep private.

Single Witness

The hazard can target only the first creature that crosses the threshold during a round. Other creatures crossing at the same time are unaffected, though they may still be startled or obstructed by the first victim's reaction.

Description

The threshold watches before it strikes. When a creature crosses without first touching the carved eye, the stone eye snaps shut and releases a pulse of invasive magic. The victim hears a whisper in a familiar voice, then feels every nearby shadow tug toward them. The hazard is quick, unsettling, and easy to understand once the party learns what it wants.

Discovery

The hazard is hidden in the threshold and surrounding mortar. It can be discovered before triggering it with a DC 13 Wisdom (Perception) check or a DC 13 Intelligence (Investigation) check. A creature that studies the eye for at least 1 minute has advantage on this check.

Archival Lore

The eye was made to expose intruders, not kill them. Its creator believed fear would make spies reveal their true loyalties. Over time, the magic became distorted, causing the hazard to speak in voices remembered by those it strikes.

Environment
Crypts, abandoned manors, forgotten shrines, wizard towers, and any guarded passage where secrecy matters.
Theme
Secrets, surveillance, guilt, and haunted architecture
Creator
An anxious crypt-warden who believed that every trespasser carried a stolen secret.
Purpose
To frighten and disorient unauthorized intruders while marking them for the dungeon's defenders.
Game System
D&D 5E
Art Style
Moody fantasy concept art, weathered dungeon stone, faint amber magical glow, tactile details, dramatic torchlight, grounded D&D 5E adventure illustration.
Visual sheet

Turn The Threshold That Watches into a sheet

A high-res, share-ready sheet you can post or print.

Gallery

No gallery images yet.