The Ballista Staff is a turret-style summoning weapon. When used, it spawns a Ballista that shoots ballista bolts at nearby enemies. It can only be obtained by purchasing it from the Tavernkeep for 100 at any time.
- Unless the player has armor that increases their maximum sentries, using the Ballista Staff with a ballista active will despawn it.
- The Ballista despawns after 60 seconds.
- This has the highest damage of any Old One's Army sentry items.
- Added to the game.