Belford's Blasting Cap

A cone of explosive force blasts forth. Each creature in a 25-foot cone originating from you must make a Constitution saving throw. On a failed save, a creature takes 3d6 fire damage and is pushed 10 feet away from you and knocked prone. On a successful save, the creature takes half as much damage and isn't pushed or knocked prone.

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, any flammable objects are also set alight, and the spell emits a cacophonous boom audible out to 300 feet.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the damage increases by 1d6 for each slot level above 1st.