The Ballista

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The Ballista
  • The Ballista.png
Stack digit 1.png
TypeWeaponCrafting material
Damage108 Ranged
Knockback8 (Very Strong)
Critical chance4%
Use time22 Average
TooltipConverts wooden arrows into greatarrows that crush enemy armor and break into shards
Inflicts DebuffArmor CrunchArmor Crunch
100% chance

Debuff duration3 seconds (Arrow)
1 second (Fossil shard)
Debuff tooltipYour armor is shredded
RarityRarity Level: 8
Sell 12 Gold Coin.png
Research1 required
Projectiles created
Ballista Great Arrow
Ballista Great Arrow
Fossil Shard
Fossil Shard

The Ballista is a craftable Hardmode bow that auto-fires. It converts Wooden Arrows into special arrows that can pierce one enemy and shatter into fossil shards upon hitting a second, as well as upon hitting solid blocks. Fossil shards deal 25% of the weapon's base damage. All projectiles will inflict the Armor Crunch debuff.

Its best modifier is Unreal.



Used in


  • The Magic Quiver increases the damage of the arrows shot by The Ballista, but doesn't increase the speed.
  • Astrum Aureus takes only 65% damage from The Ballista's greatarrows.


These history sections are still a work-in-progress, and may not yet contain changes relevant to the current version of the Calamity Mod.
    • Buffed damage from 99 to 120.
    • Decreased amount of shards spawned on death from 6 to 3, but buffed damage from 20% base damage to 25%.
    • The arrow now grants 10 local immunity frames instead of 12 global immunity frames.
    • Decreased sell price from 16 Gold Coin to 12 Gold Coin.
  • Converted arrow now inflicts Armor Crunch for 3 seconds instead of 6.
    • Buffed damage from 90 to 99.
    • Now only converts Wooden Arrows.
    • Nerfed damage from 125 to 90 and use time from 20 to 22.
    • Fossil shards now deal 20% base damage instead of 75%.
  • Resprited shard and arrow projectiles.
    • Nerfed damage from 145 to 125.
    • Arrow now pierces 2 times instead of 3.
    • Fixed unique arrows not being affected by the Archery Potion.
  • Projectiles now make sounds upon hitting blocks.
    • Buffed damage from 95 to 145.
    • Arrow now sets NPC immunity frames to 12 instead of 6.
  • Removed tooltip "Converts all arrows fired into ballista great arrows. Ballista great arrows are powerful enough to shatter even the toughest armor".
  • Special arrow now sets NPC immunity frames to 6.