Waterbending: Wave

You pick a body of water within 20 ft. and create a wave of water that is 10 ft wide and 5 ft. long. You can then push the wave 30 ft. in any direction, if a creature is hit and completely submerged by the wave they have to make a strength saving throw on a failure they get knocked prone and take 1d8 bludgeoning damage.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the width of the wave increases by 10 ft, the length of the wave increases by 5 ft, and it deals 1d8 extra damage for every slot level above 1st.