Hellfire Beam

A beam of pure hellfire erupts from your hands. Each creature in a 60-foot long, and 5-foot wide line must make a Dexterity saving throw. A creature takes 10d8 Fire damage on a failed save, or half as much damage on a successful one. A creature killed by this spell is reduced to a pile of ash, along with any non-magical items, weapons, and armor that they were carrying.

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.