Taoist Monk Gunpowder

Origin
Early Taoist monks accidently created gunpowder while trying to find an ingestible substance for immortality, some working directly under the request of seventh Han Emperor Wu. Although their concoctions did not extend life, they quickly discovered its properties were better suited for demolition and, unfortunately, warfare.

Effects
Contacting particulate matter such dirt, sand, gravel and even loose rubble will transform all available material into the equivalent mass of gunpowder. The collected gunpowder will require temperatures several hundred degrees higher than the regular form to ignite. This discrepancy is due to a larger explosive kick that lasts much longer than ordinary gunpowder, allowing for more damage and even generating small fires in its wake.