Theophilus' Thundering Torpedo

You hurl a concentrated sphere of water at a creature or object within range that is at least partially under water. Make a ranged spell attack against the target. On a hit, the target takes 2d10 thunder damage. A wooden object hit by this spell explodes in a 2ft sphere at the site of impact.

 At higher levels: When you cast this spell using a spell slot of 3rd level or higher, the spell adds 1d10 thunder damage for each slot level above 2nd.