Conjure Cannonballl

You summon a cannonball, mid-flight and at full velocity, which explodes on impact. Make a spell attack roll against a target you can see within range. On a hit, the target takes 3d10 bludgeoning damage, and each creature within 5 feet of the target must make a Dexterity saving throw. On a failed save, a creature takes 2d10 bludgeoning damage. No damage on a success. At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, the damage increases by 1d10 for each spell slot above 3rd.