Cannoneer

Your familiarity with ballistas, cannons, and other heavy mounted weaponry grants you the following benefits:

• You can load, aim, or fire a ballista or cannon as a bonus action on your turn.
• When a ballista or cannon you loaded deals damage, you can reroll the weapon's damage dice and use either total.
• When a ballista or cannon that you aimed is fired, you can add your proficiency bonus to the attack roll.
• When you fire a ballista or cannon, attacking at long range doesn't impose disadvantage on the ranged weapon attack roll.
• If you spend 1 minute repairing a ballista or cannon, it regains hit points equal to 1d6 + your level.