Wave Strike

The next time you hit a creature with a weapon attack before this spell ends, rushing water surrounds the attack. The target takes an additional 2d6 bludgeoning damage, and must make a Strength saving throw. On a failed saving throw, the target is pushed 15 feet away from you in a straight line. If you hit a target that is submerged in water, each creature in a
15-foot cone behind the initial target must also succeed on a Strength saving throw or be pushed 15 feet away from you.
At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, the damage increases by 1d6 for each slot level above 2nd.