Certain Siege

Conjure a siege weapon and a spirit gunner to man it in an unoccupied space within 10ft of the caster. (choose from catapult, cannon, or ballista) As a bonus action you can command the spirit gunner to aim and fire the siege weapon at a target in range. Regardless of what type of weapon you summon, the weapon and the spirit gunner both share an AC of 15 and 22 hit points.

Catapult: +1 to hit, range 200ft, hit 5d4 bludgeoning (ignores half-cover)

Cannon: +3 to hit, range 200ft, hit 5d4 bludgeoning

Ballista: +3 to hit, range 200ft, hit 5d4 Piercing damage.

When cast at a higher spell slot, an additional siege weapon is conjured per spell slot level. When cast using a higher spell slot, an additional gem worth 100gp is required for material components as the gem forms the core of the spirit gunner. The gem is not consumed by the spell and will drop to the ground when the spell ends.