You summon a cannonball, mid-flight and at full velocity, which explodes on impact. Make a ranged spell attack roll against a target you can see within range. On a hit, the target takes 5d10 Bludgeoning damage and an explosion extends from it in a 5-foot Emanation. Each creature other than the target within the Emanation makes a Dexterity saving throw, taking half as much damage as the target on a failed save.
Using a Higher-Level Spell Slot. The damage
increases by 1d10 for each slot level above 3.