Disciples of the Medicine King Valley have a signature and most powerful killing move: applying and casting poisons.
The natal cauldron, specifically, is the vessel used by Medicine King Valley disciples to refine and store their poisons.
Such cauldrons are generally forged from ten-thousand-year dark iron, fused with fine gold and profound silver. Not only are they incomparably rigid, but during the process of brewing and blending poisons, the containers themselves become thoroughly saturated with venomous miasma."
Chapter 63