Tidal Blast

You conjure up high-pressured water at a point on the ground that you can see within range. It swells up into a powerful wave that moves horizontally in a direction of your choice. All creatures in a 10-foot-wide and 60-foot-long line starting from that point must succeed on a Strength saving throw or take 4d6 bludgeoning damage and be pushed 30 feet in the direction of the wave, or until the end of the line, whichever is shorter, and be knocked prone. On a successful save, a creature takes half as much damage and is only moved 10 feet or until the end of the line, whichever is shorter, and isn't knocked prone.

At Higher Levels. When you cast this spell using a spell slot of 5th level or higher, the bludgeoning damage increases by 2d6 for each slot level above 4th.