Hydaelyn

You ignite the area around a target creature you can see within range. The target must succeed on a Dexterity saving throw or take 5d8 fire damage and burn for the spell’s duration. On a successful save, it takes half damage and is not burned. At the end of each of its turns, the target repeats the saving throw, taking 1d8 fire damage on a failure, and the spell ends on a success.