Entomp

You cause the ground to erupt, engulfing your foes. choose up to four targets that are large or smaller, each one of them must make a dexterity saving throw or be swallowed by dirt and gravel, taking 4d6 bludgeoning damage and being grappled, deafened and blinded. The creature can use its action to repeat the save and try to escape their early grave. Large creatures have advantage on the subsequent saves, and small and tiny ones have disadvantage. If a creature remains buried for the entire duration of the spell it dies for the lack of breathable air, unless it doesn't need to breathe.

Note that for this spell to work the targets must be on the ground, and it must be made of stone, grass, dirt, sand or gravel.