Heart of Darkness

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Revengeance Indicator.png
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Revengeance Mode-Only Content: This information applies only to Revengeance Mode and Revengeance Mode worlds.
Heart of Darkness
  • Heart of Darkness.gif
Stack digit 1.png
TypeAccessoryCrafting material
TooltipYou constantly gain rage over time
Rage does not fade away when out of combat
Revengeance drop
RarityRarity Level: 3
Sell 80 Silver Coin.png
Research1 required
Dropped by
Any Boss in Revengeance Mode11.67% Revengeance Mode
Not to be confused with Dark Heart, an enemy summoned by The Hive Mind.
For other uses of the term 'heart' see Heart (disambiguation).

The Heart of Darkness is a Revengeance Mode-exclusive Pre-Hardmode accessory that fills up the Rage Meter by 1% of the total meter every second. It also prevents the Rage Meter from emptying out of combat.

Any Boss Treasure Bag in Revengeance Mode has a 1.67% chance of containing this accessory.



Crafting Station
Shimmer TransmutationShimmer Transmutation
Heart of DarknessHeart of Darkness1

Used in


  • All boss bags have a 5% chance of containing any of the three universal Revengeance accessories, the other two being Stress Pills and Laudanum, and then a 1/3 roll is cast for which accessory is given. This results in a 1.67% chance to obtain any of the three accessories, however the player can never receive more than one at a time.


  • This accessory's name is based on the Final Boss from the game Darkest Dungeon.
    • In previous versions of the mod, this accessory gave the player increased damage when affected by the Heart Attack buff. This was likely also a reference to Darkest Dungeon, in which Heart Attack is a gameplay mechanic.


These history sections are still a work-in-progress, and may not yet contain changes relevant to the current version of the Calamity Mod.
    • Can now be swapped with Laudanum and Stress Pills using shimmer.
    • Resprited.
  • Adjusted its offset and scale in the inventory.
    • No longer increases the chances of the player receiving the Absolute Rage buff or gives additional Rage buff damage.
    • Now prevents the Rage Meter from naturally draining while the player is not in combat.
  • Changed tooltip to reflect the name change for Absolute Rage.
  • Fixed it dropping much more often than intended.
  • Now uses the Rarity Level: 3 rarity instead of Rarity Level: 10, and decreased sell price from 3 Gold Coin to 1 Silver Coin.png 60 Copper Coin.png.
    • Now drops from Treasure Bags instead of directly from bosses.
    • Now increases the player's chance of being inflicted with Heart Attack, causes the Rage Meter to deal more damage, and increased the amount of Rage it gains over time.
  • Decreased the amount of Rage it grants at a time.
  • No longer makes the player emit light based on Rage level.
  • No longer grant any benefits relating to Stress, and now lets the player generate Rage over time instead of Stress.
  • Now has a "Revengeance drop" tooltip line.