Arcane shotgun

You conjure a imaginative magic shotgun in your hand, for 2 rounds, your hands can shoot sprays of bullets of magical force. You can use an attack action to shoot a spray of bullets from your hands in a 15 ft cone, on a hit, it deals 3d6 force dmg.

Using a Higher-Level Spell Slot. The spell adds 1 round to the duration of this spell for each spell slot level above 2.