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The Cog-Iron Sump

Beneath the city of towers, steel and grease stifle the scent of the sewers.

6 roomssewermedium

A forgotten drainage hub in the Cogs of Sharn, recently repurposed by Warforged dissidents. The facility hums with illegal arcane energy and the rhythmic grinding of rusted gears.

The air is thick with the smell of ozone and stagnant water. Distant clanking and the rhythmic thrum of pumps echo through the tunnels, illuminated by flickering, guttering everbright lanterns.

☠ Threat

The Blades, a radical sect of Warforged, seek to harness the power of corrupt marks to ensure their kind's dominance. Backed by the corrupt Mayor Boromar, they operate with impunity, led by a brutal interrogator named Steel-Eye who views humans as nothing more than biological batteries.

History

Originally a maintenance station for Sharn waste management, this sector was abandoned during the Last War. Recently, the Blades have moved in, using the Mayor's clearance to establish a black-site for interrogating those with aberrant dragonmarks. They seek to extract the raw power of these marks to fuel a new generation of siege weaponry.

Encounter Table

CR
1/8CR
Expeditious Messengerx1

A small winged construct that attempts to fly away and alert the boss.

1/2CR
Warforged Scoutx2

Lightly armored constructs patrolling the perimeter for intruders.

Rumours & Whispers

1

The Mayor has been seen meeting with figures in hooded cloaks near the lower maintenance hatches.

2

People with dragonmarks have been disappearing from the Lower Cogs at an alarming rate.

3

House Tarkanan is offering a massive bounty for the return of a man named Brok.

4

Deep in the sewers, the sound of metal hitting metal sounds like a factory that never sleeps.

Quest Hooks

1
Missing KinRescue

Quest giver: Thora Tarkanen

House Tarkanan needs you to find Brok before he spills the secrets of their safehouses.

1,000gp and a favor from the House.

2
The Mayor's ShadowPolitical

Quest giver: Vane the Clerk

A disgruntled clerk suspects the Mayor is funneling city funds into an illegal construct project.

Evidence to blackmail the Mayor or clear the clerk's name.

Corridor Notes

Corridor between Room 1 and Room 2

A series of discarded wooden crates marked with the seal of the Boromar Clan.

Corridor between Room 1 and Room 5

A flickering everbright lantern that casts long, distorted shadows.

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