Balista

Like the crossbow, except bigger and mounted on a stand, or takes a strength check of 19 or higher to carry around. If a roll below 19 is made the creature can still carry the item, but will attack with disadvantage.  

Before it can be fired, it must be loaded and aimed. It takes one action to load the weapon, and one action to aim & fire it.

Ranged Weapon Attack: +6 (Once Proficient) to hit, range 100/300 ft, one target. Hit: 26 (3d12+5) piercing damage. Max 41 Damage without Crit.

Notes: Damage: Piercing