Crushing Tide

You summon a rushing wave of water that manifests in a 60- foot line that is 15 feet wide. Creatures within the area must make a Strength saving throw. If they fail, they are knocked prone and take [roll]3d6[/roll] bludgeoning damage. If they succeed, they are not knocked prone and take half as much damage.

At Higher Levels: When you cast this spell using a spell slot of 4th level or higher, the bludgeoning damage increases by 1d6 per spell slot level above 3rd.