Cone of Ashes

A blast of flame and ash erupts from your hands. Each creature in a 60-foot cone must make a Dexterity saving throw. A creature takes 8d8 fire damage on a failed save, or half as much damage on a successful one.

A creature knocked out by this spell is lit aflame causing them to take 1d4 fire damage at the beginning of their turn until an action is taken to put out the flame or the flame is put out by other means. A creature killed by this spell is burnt to ash.

At Higher Levels. When you cast this spell using a spell slot of 6th level or higher, the damage increases by 1d8 for each slot level above 5th.