Dreadflame

You choose a flame you can see within range causing the flame to momentarily changes color to a deep black and lash out at surrounding creatures. Each creature within a 10-foot radius of the flame must make a Dexterity saving throw. On a failed save, the creature takes 2d6 of necrotic damage and an additional 1d6 of fire damage, or half as much on a successful save.

When casting this spell using a 2nd level spell slot or higher, the necrotic damage increases by 1d6 for each level above 1st.