Door Destruct

You infuse destructive magical energy into a door that you can see, causing it to self-destruct and burst forth. The door must be medium-sized or smaller and either made of wood or stone. Each creature within a 10-foot cube centered around the door must make a Dexterity saving throw, taking 2d8 thunder damage and pushed 5ft. away on a failed save or half as much damage on a successful one.

Using a Higher-Level Spell Slot. The number of doors you can target increases by one for each spell slot level above 2.