Water Vortex

You summon large amounts of water, that floods a 30 foot cube (15 ft radius) originating from a point you choose. Then, in the middle of a cube appears a magical sinkhole.

Each creature within this range must make a Constitution saving throw. On a failed save, a creature takes 3d6 force damage and is pulled 5 feet into the sinkhole. Additionally, the target can't move until they succeed on a test. If a creature fails the test enough times to get in a center of a cube, they roll Wisdom saving throw. On successful save they destroy the sinkhole and a spell ends. On a failed save  they're teleported to elemental plane of water (for the remaining time) and takes 5d8 cold damage. A creature can hold its breath for a number of minutes equal to 1 + its Constitution modifier (minimum of 30 seconds).

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the damage increases by 1d8 force and 1d8 cold for each slot level above 1st.