Tidal Blast

You conjure up high-pressured water on 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 on 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, is only moved 10 feet, or
until the end of the line, whichever is shorter and isn’t
knocked prone.