Corrosive Spine

The Corrosive Spine is a Hardmode accessory exclusive to Revengeance Mode that drops from the Aquatic Scourge. It increases defense by 4 and movement speed by 10%. It additionally causes all rogue weapons to inflict the Venom debuff and occasionally release green toxic clouds in random directions. For stealth strikes, this effect only triggers for the first five enemies hit. The clouds are also released from the player while their immunity frames are active.