Aqueos Blast

You conjure a powerful stream of water from your hands. Make a melee spell attack. On a hit you deal 1d8 bludgeoning damage to the target and you are pushed back 10 feet in a straight line by the pressure of the water. This is considered forced movement. 

At Higher Levels. The spell's damage increases by 1d8 when you reach 5th level (2d8), 11th level (3d8),  and 17th level (4d8).