You create a gravitational singularity at a point within range that lasts until the start of your next turn. It creates a 15-foot radius sphere of gravitational force. A creature that starts their turn or enters for the first time on a turn in this area must make a Strength saving throw. On failure, they are pulled to the closest available space to the center of the area, and take 4d6 bludgeoning damage. On success, they take half as much damage and are not pulled. Flying creatures make their save with disadvantage. While within this area, all movement away from the center requires 2 feet of movement for every 1 foot moved. Any creature that ends their turn within the area is dragged 5 feet towards the center of it.