Coinsling

You create a magical sling using a free hand and launch a number of metal coins as projectiles towards a creature within range. Make a ranged spell attack against the target. On a hit, the target takes 2d4 piercing damage. When you cast it, you consume a number of metallic coins of type equal to the number of d4s you roll. You can fire a maximum of 2 coins with a single cast of the spell. Make a separate ranged attack roll for each 2 coins fired.

When you reach higher levels, the maximum coins you can fire increases: 4 coins at 3rd level, 6 coins at 5th level, 8 coins at 11th level and 10 coins at 17th level