Calamity Mod Wiki
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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
TooltipGives 10% increased damage while you have the absolute rage buff
Increases your chance of getting the absolute rage buff
Rage mode does more damage
You gain rage over time
Revengeance drop
RarityRarity Level: 3
Sell 80 Silver Coin.png
Dropped by
Any Boss in Revengeance Mode11.67%
Not to be confused with Dark Heart, an enemy summoned by The Hive Mind.

The Heart of Darkness is a Revengeance Mode-exclusive Pre-Hardmode accessory that fills up the Rage Meter by 30 per second and boosts the damage Rage Mode deals by 10% when activated. It also makes the player five times as likely to be granted the Absolute Rage buff, and it increases the player's damage by 10% while they have it.

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


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  • 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, and the drop rate is not affected by Defiled Rune.
  • This accessory is very useful for players whose play-style revolves around frequent use of the Rage Meter, as it reduces the amount of damage they need to take in order to enact their strategies.