Earthen Guantlets

You cover your arms and hands with a layer of rock and stone for the duration. While active, you use your spellcasting ability instead of strength for unarmed strikes and your unarmed strikes deal 1d8 bludgeoning damage plus your spellcasting ability modifier. When you take the Attack action on your turn, you can use a bonus action to make one unarmed strike. 

Damage from your unarmed strikes deal double damage to structures and objects.