You utter a word of power and create a repelling force centered on you.  

Each creature you choose within a 15-foot sphere must succeed on a constitution saving throw or take 1d8 force damage and be knocked back 15 feet.  A creature that succeeds on its saving throw takes half a much damage and is knocked back half as far. The die type becomes a d12 if the target is missing any of its hit points.

Additionally, you may attempt to or recover from being buried or trapped under debris.

The spell’s damage increases by one die when you reach 5th level (2d8), 11th level (3d8), and 17th level (4d8).