Arcane Arquebus

You create a magical firearm that you use to immediately fire at a creature or object within range. Make a ranged spell attack against the target. On a hit, the target takes 1d12 piercing damage. On a miss, the gun misfires and you take 1d6 force damage. The firearm disappears after it deals damage.

Both the spell's intended damage and misfire damage increase by 1d12 and 1d6, respectively when you reach 5th level (2d12 and 2d6), 11th level (3d12 and 3d6), and 17th level (4d12 and 4d6).