Thunderwave

Each creature in a 15-foot cube originating from
you must make a Constitution saving throw.
Fail: 2d{8} damage and pushed 10 feet away from
you. Success: 2d{8}/2 damage.
Unsecured objects within the area of effect are
automatically pushed 10 feet away from you.
Using a spell slot of 2nd level or higher, the
damage increases by 1d{8} for each slot level
above 1.