Tidal Wave

3rd-Level Conjuration
Casting Time: 1 action
Range: 120 feet
Components: VSM (a drop of water)
Duration: Instantaneous

As in Xanathar's Guide to Everything with the following added:

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, the damage increases by 1d8 for each slot level above 3rd.

Source: XGE 168

Changelog

Added upcasting option.