Thunderous Applause

You quickly forge a dark thunderstorm ahead, causing lightning to strike down on you at the clap of your hands. Each creature in a 15' foot originating from you must make a Constitution saving throw. On a failed save, a creature takes 4d6 Terran damage and is pushed 10 feet away from you. On a successful save, the creature takes half as much damage and isn't pushed.
In addition, unsecured objects that are completely within the area of effect are automatically pushed 10 feet away from you by the spell's effect, and the spell emits a thunderous boom audible out to 300'.

You can spend 1 more mana to add an extra 2 damage dice to the damage roll.

Material Components:Verbal, Somatic
Related Element: Terran
Effect Duration: Instantaneous
Effect Casting Time: 1 Action
Range: 15' Cube
Manacost 1
Source: Warlock (Fathomless)