Crushing Water

When you cast this spell, target a creature or object within range. You evoke water that surrounds the target, causing it to be restrained for the duration. The water compresses the creature with the power of the sea. At the start of each of its turns, the target must make a strength saving throw. On a failed save, it takes 11d6 force damage. On a successful save the target takes only half damage, and breaks free of the water, causing the spell to end.