Steampunk. When an enemy does an action here, they receive 1 level of exhaustion each time, and sleep cannot recover it. This trait only triggers when the pumping unit is on.

Oxy-Capacitor. Each recruit present gets +3 oxygen counters, but to recover these in the room will cost 1 constitution point. Small rests recover up to 3, long rests recover up to 8. One oxygen counter remedies 1 point of oxygen.

Manufacturing v2. Supply this monster with 1 piece of oil to recover 1 unit of exhaustion. This does not cost an action.

Pumping Unit. This monster can store up to 1500 pieces of coal, supplying anything within 15 miles. Everything covered may breathe, ignoring any terrain hazards for such, and is unaffected by anything temperature based. This can be toggled on/off freely.

Security Perimeter. If there's an enemy present where this is, you must challenge that enemy first in order to use this construct, either killing or converting them.

Iron Lung. Supported forces loose 3 constitution while it's active, unless they have an oxygen supply.

Sludge Buildup. For every point of oil supplied, one sludge counter is placed on the stat losses of the slugs, with diminishing returns equal to the present value on such.