bomb

An explosion is summoned from a point of your choice within range. Each creature in a 30-foot-radius cube must make a Constitution saving throw. A creature takes 5d6 explosive damage on a failed save, or half as much damage on a successful one. A creature made of inorganic material such as stone, crystal, or metal has disadvantage on this saving throw.

At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, the damage increases by 2d8 for each slot level above 2nd.