CLl:
Price: 1,200 gp
Weight:
Resembling a massive crossbow, a ballista's power is provided by twisted skeins of animal sinew used as torsion springs driving a pair of adjustable arms. A cord attached to both arms is winched back and a projectile is loaded into a grooved slider for release. Ballistae are direct-fire weapons.
This common type of ballista, also called an arbalest or scorpion, is size Large, maneuverable, and often mounted atop towers or even vehicles. Light ballistae have a hardness of 5 and 50 hit points. Light ballista bolts cost 10 gp each and weigh 10 pounds.
Heavy
These Huge-sized siege engines are commonly used as castle defenses, as well as on large warships. Heavy ballistae have a hardness of 5 and 100 hit points. Heavy ballista bolts cost 30 gp and weigh 20 pounds each.
Gate Breaker
This massive ballista fires specially weighted quarrels with blunt mental tips. These are used as long-range battering rams, shot at walls or the gates of castles. When they hit a wooden structure, they have a critical range of 19–20/×3. Gate breaker ballistae have a hardness of 5 and 200 hit points. Gate breaker ballista bolts cost 50 gp and weigh 30 pounds each.