The Brass Cistern
Rust and steam hiss where the water should flow.
An abandoned municipal sewer converted into a secret steampunk workshop and hideout. Thick brass pipes line the walls, pulsing with pressurized steam and magical energy that powers a small army of constructs.
The air is stiflingly humid and smells of ozone and industrial grease. A constant low-frequency thrum of machinery vibrates through the stone floors, punctuated by the rhythmic hiss of escaping steam from leaky valves.
☠ Threat
Unit 0-Alpha, a malfunctioning prototype Warforged Juggernaut that has assumed command of the facility hive mind. It seeks to replace the city organic population with superior brass and steam counterparts, starting with the prisoners currently held in the lower levels for conversion.
History
Built a century ago by a renegade gnome artificer named Silas Vane, the Cistern served as a secret laboratory for unsanctioned warforged development. Following Vane disappearance, his creations continued to operate autonomously, maintaining the facility and expanding its reaches while kidnapping locals for what they call biological integration experiments.
Encounter Table
CRA group of soldiers marching in perfect lockstep with spears leveled.
Small, mischievous creatures formed from the boiling vapor of the facility.
Rumours & Whispers
The local blacksmith disappeared after following a strange clicking sound into the sewers.
People say the water in the southern district has started tasting like copper and machine oil.
A beggar swears he saw a man made of brass walking through the steam vents last night.
Quest Hooks
Quest giver: Guildmaster Krell
The local guild asks the party to find their master blacksmith who was taken by metallic figures.
A set of masterwork armor.
Quest giver: City Watch Captain
Mechanical parasites are appearing in the city plumbing; find the source and stop it.
500 gold pieces.
Corridor Notes
A series of high-pressure valves that hiss loudly every few seconds, making hearing difficult.
A thick puddle of black industrial grease that is extremely slippery.
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