Cannoneer

Light the Fuze. All of the attacks of the Cannoneer are tied to the same recharge. 

Take Aim (3/day). As a bonus action, the cannoneer can add 1d10 to its next attack or damage roll.

Cannon Attacks (Recharge 3-6). The cannoneer uses one of the following cannon attacks.

Cannon Shot. Ranged Weapon Attack: +10 to hit, range 100/400 ft., one target. Hit: 36 (4d12 + 10) bludgeoning damage. If the target is a large or smaller creature, the creature must make a DC 20 Strength saving throw or be knocked prone.
Grapeshot Blast  The cannoneer fires a shot loaded with grapeshot pellets in a 20-foot cone in front of him. Every creature in that area must make a DC 15 Dexterity saving throw, taking 28 (8d6) piercing damage on a failed save, or half as much on a successful one.
Exploding Shot. The cannoneer fires a shot that is a fragile, red hot ball of metal. The cannoneer fires it up to 70 feet away. Each creature within 20 feet of the detonation must make a DC 17 Dexterity saving throw, taking 10 (3d6) piercing damage and 10 (3d6) fire damage on a failed save, and half as much on a successful one.
Chain Shot. Ranged Weapon Attack: +10 to hit, range 100/400 ft., one target. Hit: 19 (3d12) bludgeoning damage. The target is grappled (escape DC 15) if it is a Huge or smaller creature. Small or smaller creatures have advantage on Dexterity (acrobatics) checks to escape the grapple.