You create a wall of raging, turbulent water filled with rocks and debris on a solid surface within range. You can make the wall up to 60 feet long, 20 feet high, and 5 feet thick, or a ringed wall up to 20 feet in diameter, 20 feet high, and 5 feet thick. The wall is translucent (the shape of figures can be discerned but details can’t be made out), lightly obscuring the area. The wall lasts for the duration. Ranged attacks can’t pass through the wall and its area is difficult terrain.

If a creature starts its turn in the wall or enters the wall for the first time on a turn, the creature must succeed on a Strength saving throw or be entrained in the water, reducing its speed to 0 and rendering it unable to breathe, until it exits the wall. On a success, the creature can pass through the wall this turn. A Huge or larger creature automatically succeeds on this saving throw.

When a creature becomes entrained and at the start of each of the entrained creature’s turns, it takes 3d10 bludgeoning damage as it is battered by the turbulent flow and debris. An entrained creature can use its action to make a Strength check against your spell save DC, exiting the wall prone within 5 feet of its current location on a success.

White Water Whip. As a bonus action on your turn, you can cause a tendril of white water to grab at a creature within 10 feet of the wall. That creature must succeed on a Strength saving throw (Huge or larger creatures automatically succeed on this saving throw) or take 3d10 slashing damage and become entrained by the wall.

At Higher Levels. When you use a spell slot of 6th level or higher to cast this spell, the damage increases by 1d10 per slot level above 5th. In addition, when you use a spell slot of 7th level or higher to cast this spell, the wall’s length increases by 30 feet, its thickness increases by 5 feet and the size of creature that automatically succeeds on the saving throw and that is entrained if it willingly enters the wall increases by one for each two slot levels above 5th (to Huge at 7th level and Gargantuan at 9th level).