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The Iron Overflow

Rust-streaked water hides the rhythmic hum of mechanical intent.

7 roomssewermedium

A forgotten maintenance sub-sector of Sharn's Cogs where discarded Warforged have established a fortified base. The air is heavy with the smell of machine oil and stagnant wastewater.

The dungeon is filled with the constant roar of rushing water and the rhythmic clanging of heavy pistons. Blue magewright lanterns provide dim, flickering illumination, casting long, jerky shadows. The temperature is uncomfortably warm and humid, smelling of copper and sulfur.

☠ Threat

Unit 7-PX, a defective Cannith interrogation construct, leads the cell. It is obsessed with the biological 'spark' of dragonmarks and believes that by dissecting House Tarkanan members, it can find a way to grant 'souls' to all constructs. It is cold, calculating, and views biological life as a series of inefficient variables to be solved.

History

Built during the Last War by House Cannith to manage industrial runoff, this sector was abandoned after the Treaty of Thronehold. Recently, a cell of Warforged extremists belonging to the Lord of Blades' ideology repurposed the site as a clandestine interrogation facility. They use the facility's isolation to extract secrets from captured dragonmarked individuals.

Encounter Table

CR
1CR
Warforged Sentinelx1

A lone construct patrolling the halls with a glowing blue searchlight for an eye.

1/4CR
Steam Mephitx1d4

Small, mischievous creatures formed from the dungeon's escaping heat.

Rumours & Whispers

1

A local beggar saw a group of metallic men dragging a hooded figure into the sewers near the Cogs.

2

The plumbing in the Lower City has been acting up, surging with blue sparks and metallic clanging.

3

House Tarkanan is offering a massive bounty for the return of a man named Brok, no questions asked.

Quest Hooks

1
The Tracking AmuletRescue

Quest giver: Vora the Shadow

A House Tarkanan agent hands the party a vibrating amulet and tells them their friend's life depends on following it.

750 gp and a favor from the Tarkanan family.

2
Rust and RuinInvestigation

Quest giver: Sergeant Briar

City Watchmen are too afraid to enter the sewers where strange 'clockwork screams' are coming from.

Official commendation and 500 gp.

Corridor Notes

Between Room 1 and Room 2

A wall pipe has burst, spraying a constant mist of warm, oily water across the floor.

Near the entrance to Room 5

Large scratches, clearly made by metal claws, mar the stone walls at shoulder height.

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