Stream of Flame 2014

A gout of flame projects from your hand in a direction you choose. Each creature in a 30-foot long, 5-foot wide line must make a Dexterity saving throw. A creature takes 4d8 fire damage on a failure, or half as much damage on a success. The flames ignite any flammable objects in the area that aren’t being worn or carried.

When you cast this spell using a spell slot of 3rd level or higher, the damage increases by 1d8 and the length of the line increases by 5 feet for each slot level above 2nd.