Hogwarts schooling

You choose a space on the ground that is currently occupied by a Large or smaller creature you can see within range. The ground becomes a thick liquid and swirls out from under the creature in an orb-like shape. The material then slams back down and regains its solidity in an attempt to partially bury the creature. The target must make a Dexterity saving throw. On a failed save, the target takes 3d6 bludgeoning damage and is restrained for the spell’s duration.