The Mold Kiln

The lantern oil ran black, and the dark grew something to feed on.

9 roomsDeep dungeon that goes to the underdark. The party is locating and escorting a supplier who has yet to return back with supplies to make important enchanted oil and wicks for lanterns that are designed to keep beasts off the streets at night. Without this supplier and supplies, less light for the town spells certain disaster for its citizens. medium

This forgotten refinery once prepared enchanted lamp oil and treated wicks for the town's night lanterns, but the workrooms have been overtaken by fungus and repurposed into a living nursery. The complex is dangerous, claustrophobic, and threaded with looping routes that let intruders get lost while the things below the floor listen for movement.

Wet stone sweats under a blanket of spores. The air tastes of mold, bitter alchemy, and old lamp oil, with pale fungi casting a dim blue-green glow over broken vault doors and root-choked masonry. Somewhere below the floor, something alive pulses softly like a distant bellows.

☠ Threat

A rogue fungal intelligence now dominates the vaults below the nursery floor, using spores and alchemical runoff to spread its body through the complex. Its servants are repurposed workers, scavengers, and warped beasts that protect the vats where the enchanted oil was contaminated and transformed. If it is not stopped, the town's vital lantern supplies may be ruined or turned into a vector for infection.

History

The Mold Kiln was built by civic alchemists and lanternwrights decades ago as a deep service complex beneath the city's lamp stores. It refined enchanted oil, soaked wick cords in preservative salts, and kept emergency reserves safe from thieves. When the town's old wardens vanished, the site was abandoned, then quietly seized by something that prized warmth, seepage, and darkness.

Encounter Table

CR
1/2CR
Mold Gnawerx2d4

Small blind tunnel scavengers drawn to spilled oil and movement.

1CR
Spore-Touched Laborerx1d3

Spores drift into discarded bodies, making them wander the halls in search of warmth.

2CR
Ceiling Mitex1d2

Thin fungal predators that stalk from cracks and overhead ledges.

3CR
Mire Salvagerx1

A masked scavenger armed with a hooked cutter and a sack of questionable salvage.

Rumours & Whispers

1

The old lamp supplier was seen carrying a crate into the service stair, then vanished before dawn.

2

Miners swear there is a room below the vaults where mushrooms glow like lanterns and whisper when cut.

3

Some say the town's failing lantern oil was stolen by smugglers, not monsters.

4

A watchman claims he heard a voice calling for help from inside a sealed wall near the flooded hall.

5

Priests warn that anything preserved underground for too long becomes hungry for light.

Quest Hooks

1
Find the Missing Supplierrescue

Quest giver: Marwen Tallow, master lamplighter

The town's night lanterns are failing, and the supplier carrying the next batch of oil and treated wicks never returned.

200 gp and lifetime access to town supplies

2
Stop the Spores at the Sourcecleanup

Quest giver: Sister Vale, temple healer

Strange spores have begun appearing in lantern soot across the city, suggesting the supplies were tampered with below ground.

A blessing against disease and poison

3
Reclaim the Refineryrecovery

Quest giver: Jorren Pike, supply broker

A rival merchant offers a bonus if proof is brought back that the old refinery can be safely reopened.

150 gp plus a discount on gear

4
Trace the Beastlightinvestigation

Quest giver: Captain Orla Renn

The city watch wants the source of the nighttime beast stirrings traced to the deep complex before panic spreads.

Official favor and a writ of passage

Corridor Notes

Between the flooded hall tunnel and Room 3

Thin mats of glowing fungus line the walls and flare when disturbed, briefly revealing bootprints and drag marks.

The loop corridor near Room 5 and Room 7

Rusted service pipes leak warm condensate that smells of lye and spoiled grain.

Shortcut passage between Room 6 and Room 9

Collapsed storage shelves create crawlspaces packed with shattered lantern glass and black powder stains.

Visual sheet

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