Dark Flare

A stream of dark fire bursts forth from your hand in a 40-foot long, 15-foot wide line. Each creature in the line must make a Dexterity saving throw, taking 5d4 fire damage and 5d4 necrotic damage on a failed save, or half as much damage on a successful one.

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, the fire damage and the necrotic damage each increase by 1d4 for each spell level above 3rd.