Gunpowder (horn)

Setting fire to a container full of gunpowder can cause it to explode, dealing 3d6 fire damage to creatures within 10 feet of it. A successful DC 12 Dexterity saving throw halves the damage. Setting fire to an ounce of gunpowder causes it to flare for 1 round, shedding bright light in a 30-foot radius and dim light for an additional 30 feet.