Eldritch Gatling

Using the wrath of your patron you unleash your eldritch fury upon your foes. Each creature in a 25-foot cone must make a Dexterity saving throw. A creature takes the effects of your Eldritch Blast and any Eldritch Blast Invocations; a number of times equal to your beam maximum of a normal casting of Eldritch Blast. On a successful save take half of the overall damage; creatures still take the effects of any Eldritch Invocations

At Higher Levels
When you cast this spell using a spell slot of 4th or higher, increase the range by 5 feet.