Scunner, a roiling mass of flesh and slime, has crawled out of the ruins of the House of Plagues.
He emits a toxic vapor that impairs the functions of those who attempt to fight him. You can try it, Maw Walker, but it's doubtful you could hurt him on your own.
Constructs are built to fight creatures like Scunner. So gather a force of them and eliminate the threat.