Eldritch Radiance

Your Eldritch Blast takes on a form more befitting of your patron (You cannot know both Eldritch Blast and this spell and any Eldritch Invocations that augment your Eldritch Blast instead augment this spell).  Searing light erupts from your hand, mouth, or eyes into a 100 foot long 5 foot wide beam in a direction you choose. Each creature in the line must make a Dexterity saving throw. A creature takes 1d6 Radiant damage on a failed save. 

The spell creates more than one beam when you reach higher levels: two beams at 5th level, three beams at 11th level, and four beams at 17th level. You can direct the beams independently and you may overlap them. A creature makes a seperate save for each beam it is caught in.