Tidal Smite

The next time you hit a creature with a weapon attack before this spell ends, the weapon swirls with water's fury as you strike. The attack deals an extra 2d8 magical bludgeoning damage to the target, and the target becomes knocked prone on a failed Strength Save against the user's Spell DC.

At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, the extra damage increases by 1d8 for each slot level above 2nd.