Blob Lob

You Lob a viscous blob of acid at a creature or object in range. Make a ranged spell attack against the target. On a hit, the target takes 1d6 acid damage immediately and 1d6 additional acid damage at the start of your next turn. A Creature can use it's action to scrape off the blob with a suitable implement to avoid the additional damage.

This spell's initial and additional damage both increase by 1d6 when you reach 5th level (2d6, 2d6), 11th level (3d6, 3d6), and 17th level (4d6, 4d6).