Crushing Depths

You conjure a sphere of immense pressure and swirling water at a point you can see within range. The sphere is 10 feet in radius and hovers in place, filled with the crushing weight of the deep sea.

Effects:

• When a creature starts its turn in the area or enters it for the first time on a turn, it must make a constitution saving throw. On a failed save, the creature takes 6d8 bludgeoning damage, is restrained by the crushing pressure, and begins to drown if it cannot breathe underwater. On a successful save, it takes half damage and is not restrained.
• While restrained, a creature can attempt another Constitution saving throw at the end of each of its turns to escape the pressure.
• The area is considered heavily obscured, and ranged attacks through it are made with disadvantage. Fire damage within the sphere is halved.

At Higher Levels: When cast using a spell slot of 6th level or higher, the damage increases by 1d8 for each slot level above 5th.