Fold-Resonance Snare

Fold-Derelict resonance snare rigged into a corridor or chamber.

A Fold-Derelict rarely leaves the room empty. Months or years after the hull cracked, a resonance pattern lingers in the bulkheads -- pressed into the metal by the terror of whatever the crew saw at the end. Step into the wrong corridor and the room remembers with you: dread first, then the visions, then a check the body writes before the mind catches up. The snare is not rigged on purpose; it is rigged by what was there. The only safe route is the one Fold Lore can map -- and the only fix is to leave the room quieter than you found it.

Rules Reference

FieldValue
Detect / Dc20
Detect / NotePerception (DC 22) feels the dread before the visions; Fold Lore (DC 20) reads the resonance signature.
Detect / SkillFold Lore
Prevented ByDampened resonance, Crew never enters
ResetManual; resonance decays over weeks but never fully clears without Fold Lore work.
Save / Dc20
Save / NoteSap damage on failure; a fail by 5+ triggers a Perils-adjacent vignette as the handler chooses.
Save / TypeWill
Trigger / DetailEngages any crew that holds position in the resonance field for 1d4 rounds or that speaks aloud in the chamber.
Trigger / Typeproximity / mental contact
Categoryhazard

Disarm

dc: 22

FieldValue
dc22
noteMap and dampen the resonance; does not disable, only shortens the exposure.
skillFold Lore

dc: 22

FieldValue
dc22
noteRead the bulkhead harmonica and chase the resonance to its dead end.
skillSensors & Signals

Effect

description: Dread accumulates; pernicious until rest.

FieldValue
descriptionDread accumulates; pernicious until rest.
modifier-2d4 sap
targetsap

description: Crew pulls back from the threshold on a failed save.

FieldValue
descriptionCrew pulls back from the threshold on a failed save.
modifierFrightened 1d4 rounds
targetcondition

description: Hallucinatory overlay; crew cannot reliably target hosts in the corridor.

FieldValue
descriptionHallucinatory overlay; crew cannot reliably target hosts in the corridor.
modifierVisions 1d4 rounds
targetpsychic

Mitigation

description: Fold Lore maps and dampens before the crew enters.

FieldValue
descriptionFold Lore maps and dampens before the crew enters.

description: No speech, no tools, no comms in the chamber; reduces the trigger to proximity-only.

FieldValue
descriptionNo speech, no tools, no comms in the chamber; reduces the trigger to proximity-only.

Severity Tiers

damage: 1d4 sap

FieldValue
damage1d4 sap
saveDc16
tiertrace

damage: 2d4 sap + visions 1 round

FieldValue
damage2d4 sap + visions 1 round
saveDc20
tiersettled

damage: 4d4 sap + visions 1d4 rounds, peril trigger on fail by 5+

FieldValue
damage4d4 sap + visions 1d4 rounds, peril trigger on fail by 5+
saveDc24
tierperil-adjacent