Big Iron on their Hip

You manifest a pair of enormous ethereal hands and ranged weapon, that fire a shot at a creature you can see within range. Make a ranged spell attack. The creature takes 8d8 piercing damage on a hit. If you fire the piece of ammunition used in the casting of this spell from an appropriate weapon that you are proficient with, it takes additional damage, equal to the dice of that weapon (for example, firing from a heavy crossbow would add a d10 to the damage), and you can treat it as using the attack action for the purpose of any feature that allows you to attack multiple times.