Toxic Heart

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Toxic Heart
  • Toxic Heart.png
Stack digit 1.png
TooltipSummons a plague aura around you that damages nearby enemies
Makes you immune to the Plague debuff
Multiplies all sickness-based debuff damage by 1.5
Inflicts DebuffPlaguePlague
100% chance

Debuff duration2 seconds (Aura)
Debuff tooltipRotting from the inside
Grants immunity toPlague
RarityRarity Level: 8
Sell 12 Gold Coin.png
Research1 required
Dropped by
The Plaguebringer Goliath1100%

The Toxic Heart is a Hardmode accessory dropped by The Plaguebringer Goliath. When equipped, it has a 10% chance per frame to inflict 50 damage, as well as the Plague debuff, to all enemies within an 18.75-tile radius of the player. It also makes the player immune to the Plague debuff and makes them emit a green light and also increases the damage of player-inflicted sickness debuffs by 1.5x.


  • The rate at which the aura checks for and strikes nearby enemies roughly equates to 6 hits per second on average.
  • If an enemy is immune to the Plague debuff or has no contact damage, the aura will not deal damage.


These history sections are still a work-in-progress, and may not yet contain changes relevant to the current version of the Calamity Mod.
  • Now increases the damage of sickness debuffs by 1.5x.
  • Now grants full immunity to Plague instead of reducing its damage by 50%.
  • Buffed aura damage from 30 to 50. It now additionally reduces the damage and removes the blindness of the Plague debuff.
  • No longer blinds and weakens the player when above 90% health, but bees now have a damage cap of 30.
    • Now blinds and weakens the player when above 85% health instead of 75%.
    • Increased aura range by 50%.
  • Now decreases movement speed by 5% instead of 10% when above 75% health.