Detonate

A black marble appears form your hand and flies to a point you can see within range and shrinks to nothing before releasing a concussive wave of force and a thunderous sound. Each creature within a 10 foot radius sphere centered on the point must make a Strength saving throw.

A target takes 5d8 bludgeoning damage on a failed save, or half as much damage on a successful one. This counts as magical damage for the purpose of overcoming resistance.

On a failed save, corporeal creatures and freestanding objects are pushed a number of feet equal to 1D4 times 5 feet away form the epicenter of the blast and are knocked prone.

At Higher Levels. When you cast this spell using a spell slot of 4th level of higher:

Increase the damage by 5 and the pushing distance by one D4 for each slot level above 3rd.

Beginning at fourth level the spell has enough force to destroy structures. For every slot level above 3rd the spell can destroy: 6 inches of wood, 4 inches of stone or a quarter of an inch of metal. For this purposes, this damage is considered non-magical.