Armageddon flame

You make a diamond with your index fingers and your thumbs and chant the words "fer vim, ducite flammam" as flames start swirling around you and the sound of heavy rain fills the air. At the start of your next turn you slam your hands together and a 60ft cone of roaring flame erupts from your body anyone in its path must make a Dexterity saving throw against your Spell Save DC, A creature takes 38 (7d10) fire damage on a failed save or half as much on a successful one.

At Higher Levels. When you cast this spell using a spell slot of 6th level or higher, the damage increases by 1d10 for every spell slot above 5th.