Alchemist’s fire (flask)

This sticky, adhesive fluid ignites when exposed to air. You can use an action to throw this flask up to 20 feet where it shatters on impact. Make a ranged weapon attack against a creature or object, treating the alchemist’s fire as an improvised weapon. On a hit, the target takes 1d6 ongoing fire damage. This damage persists for 1 minute. A creature can end all ongoing damage being dealt by alchemist’s fires by using its action to either make a DC 14 Dexterity check to extinguish the flames or by dousing the target with at least 1 gallon of water.