Arcane Turret

You create an arcane ranged weapon within range that lasts for the duration or until you cast this spell again. When you cast the spell, you can make a ranged spell attack against a creature within 60 feet of the weapon. On a hit, the target takes force damage equal to 3d6 + your spellcasting ability modifier.

As a bonus action on your turn, you can move the weapon up to 20 feet and repeat the attack against a creature within 60 feet of it.

The weapon can take whatever form you choose, though it will have no effect on gameplay.

At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, the damage increases by 1d6 for every slot level above 2nd.