The Foundry

An ancient device once used to create artificial creatures of unknown power and purpose, the Foundry has suffered much over the years. Theory suggests it once could be manipulated to produce such creatures from inert raw material, but in its decayed state it requires a bit more of a headstart — it must be fed corpses, which it threads with cables and engines to produce bizarre, terrifying undead monstrosities.

The machine itself is a vast cauldron-like apparatus with tubes and pumps and shooting flames all around, and a single enormous pipe leading out from the bottom and along the ground. This two-story-tall cylinder of hammered bronze is buttressed by equally immense protrusions and shuddering mechanisms, all of which pound away whenever a corpse comes through, attaching and hammering and sawing with terrible frenetic energy.

The new mechanical undead creature emerges from the far end of the pipe, nearly a hundred feet from the cauldron, ready for its orders. Such a creature is a Necrotech Construct and is definitely not to be trifled with.

There are ways of attuning the Foundry so that the constructs produced will obey simple commands, but the device is unstable and such things are likely to fail — perhaps with a likelihood of 5% per day. So each day roll a d20 and on a 1, all the constructs so far produced go rogue and start doing what comes naturally — killing every living thing they come across.