Riptide
At the start of your next turn, you can direct the current of the swell as it dissipates. Choose one of the following options.
* ***Riptide.*** The water in the cylinder flows in a direction you choose, sweeping along each creature in the cylinder. An affected creature takes 3d8 bludgeoning damage and is pushed 40 feet in the chosen direction, landing prone.
* ***Undertow.*** The water rushes downward, pulling each creature in the cylinder into an unoccupied space at the center. Each creature is knocked prone and must make a successful Constitution saving throw or be stunned until the start of your next turn.