Here's another encounter designed to give the PCs access to a potentially powerful strategic asset, but one that presents plenty of dangers too. It would make the most sense on a road, and should ideally be used in an area with a developed military. If you're using it, you should do so in a setting that has developed gunpowder or similar technologies.While on the road, the PCs come upon an abandoned cart on the side of the road, carrying a large barrel filled with a fine black dust with...