Thelyss' Gravitational Locus

You create a 5-foot Sphere of potent gravitational force centred on a point you can see within range. For the spell’s duration, the Sphere and any space within 30 feet of it are difficult terrain.

When the Sphere appears and at the start of each of your turns until the spell ends, unsecured objects within 30 feet of the Sphere are pulled toward the its centre, ending in an unoccupied space as close to the centre as possible.

A creature that starts its turn within 30 feet of the Sphere must succeed on a Strength saving throw or be pulled straight toward its centre, ending in an unoccupied space as close to the centre as possible. A creature that enters the Sphere for the first time on a turn or starts its turn there takes 2d6 force damage and is Restrained until it is no longer in the Sphere. If the Sphere is in the air, the Restrained creature hovers inside the Sphere. A creature can use its action to make a Strength check against your spell save DC, ending this Restrained condition on itself or another creature in the Sphere that it can reach. 

Using a Higher-Level Spell Slot. The damage increases by 1d6 for each spell slot level above 3.