Tsunami Smite

The next time you hit a creature with a weapon attack before this spell ends, the weapon glows teal as you strike, and a spectral tidal wave strikes your foes. The attack deals an extra 1d12 magic bludgeoning damage to the target, along with any creatures in a 15ft square immediately in front of you. Any large or smaller creatures affected also make a strength saving throw, or are knocked prone.

At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, the extra damage increases by 1d12 for each slot level above 2nd.