Corrosive Spine

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Corrosive Spine
  • Corrosive Spine.png
Stack digit 1.png
Tooltip5% increased movement speed
All rogue weapons inflict poison and spawn irradiated clouds on enemy hits
You release a ton of clouds everywhere on hit
Inflicts DebuffPoisonedPoisoned
100% chance

Debuff duration4 seconds (On rogue hits)
Debuff tooltipSlowly losing life
Inflicts DebuffIrradiatedIrradiated
100% chance

Debuff duration2 seconds (Clouds)
Debuff tooltipYour skin is burning off
RarityRarity Level: 5
Sell 4 Gold Coin.png 80 Silver Coin.png
Research1 required
Projectile created
Corrosive Clouds
Corrosive Clouds
Dropped by
Aquatic Scourge125% / 33.33% Expert Mode

The Corrosive Spine is a Hardmode accessory that drops from the Aquatic Scourge. It increases defense by 4 and movement speed by 5%. It additionally causes all rogue weapons to inflict the Poisoned debuff and occasionally release green toxic clouds in random directions. For stealth strikes, this effect only triggers for the first three enemies hit. The clouds are also released from the player while their immunity frames are active.


These history sections are still a work-in-progress, and may not yet contain changes relevant to the current version of the Calamity Mod.
  • Nerfed irradiated cloud base damage from 100 to 80.
    • Now also causes rogue attacks to inflict Poisoned instead of Acid Venom on PvP attacks, instead of exclusively enemy attacks.
    • Fixed tooltip still saying that it inflicts Acid Venom instead of Poisoned.
  • Nerfed movement speed boost from 10% to 5%.
  • Projectiles now inflict Poisoned instead of Acid Venom.
  • Clouds now grant 16 local immunity frames instead of 8.
    • Decreased projectile count per-hit from 3-6 to 2-4 and projectiles now properly deal rogue damage. Additionally, projectiles now have a base damage of 35 instead of dealing 70% weapon damage.
    • Can now drop in all difficulties, changed drop rate from 25% Revengeance Mode to 11.11% / 12.5% Expert Mode.
  • Clouds now have a soft damage cap of 90.