Alchemist's Fire

This sticky, adhesive fluid ignites when exposed to air. You hurl a flask of alchemist's fire at a creature or object within range. Make a ranged spell attack against the target. On a hit, the target takes 1d4 fire damage from the hit and 2d4 additional fire damage from being set on fire at the start of each of its turns. A creature can end this damage by using its action to make a DC 10 Dexterity check to extinguish the flames. A flammable object hit by this ignites if it isn’t being worn or carried.

At Higher Levels. When you cast this spell using a spell slot of a higher level, both the initial and the burning damage increase by 1d4.