Abyss shriek

You unleash a wave of wrathful force. Each creature in a 25-foot Cone originating from you makes a Constitution saving throw. On a failed save, a creature takes 2d8 Thunder damage, 2d8 Radiant or Necrotic damage (your choice), is stunned for 1 round, and is pushed 10 feet away from you. On a successful save, a creature takes half as much damage only.

In addition, unsecured objects that are entirely within the Cone are pushed 10 feet away from you, and a thunderous shriek is audible within 300 feet.

Using a Higher-Level Spell Slot. The Thunder damage increases by 1d8 for each spell slot level above 3.