Entomb

You call upon the earth to swallow one creature of Large size or smaller, standing on the ground within range.  As the earth churns, the ground becomes difficult terrain in a 15 ft. cube centered on the target.  The target must make a Strength saving throw or be Entombed for the duration.

An Entombed creature is restrained, completely buried underground, and takes 4d8 bludgeoning damage at the start of each of their turns as the soil and rock attempt to crush them.  The target may use their action to make a Strength saving throw to attempt to claw their way to the surface.  On a successful save, the creature emerges from the ground prone, and the spell ends.  A creature with a Burrow speed has advantage on this saving throw.

If you lose concentration on the spell, the earth releases the creature, and it emerges, prone, as if it had made a successful save.

If Entomb is cast using a higher level spell slot, the bludgeoning damage dealt each turn increases by 1d8 per spell level above 4th.