Aqua Surge

You release a sudden surge of pressurized water in a 5-foot-wide, 10-foot-long line. Each creature in the area must make a Strength saving throw or be pushed 5 feet away and take 1d6 bludgeoning damage. On a success, they resist the push and take only half damage.

If the target is on fire, the flames are extinguished, and they have advantage on the saving throw.

The damage increases at higher levels:

5th level: 2d6 bludgeoning damage
11th level: 3d6 bludgeoning damage
17th level: 4d6 bludgeoning damage