Defiled Rune

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Defiled Rune
  • Defiled Rune item sprite
Stack digit 1.png
Use time44 Very Slow
TooltipWings do nothing and enemies can critically hit you
Increases most rare item drop chances and enemies drop 50% more cash.
Using this while a boss is alive will instantly kill you and despawn the boss.
Can only be used in revengeance and death mode
Can be toggled on and off.
RarityRarity Level: 11
SellNo value

"Your soul is mine..."

The Defiled Rune is an item that can be activated and deactivated while in Revengeance Mode or Death Mode. When active, it has multiple effects on gameplay:

  • Wings do not work.
  • All damage sources have a 25% chance to critically strike the player, dealing 1.5x damage.
  • Certain items in the Calamity Mod with drop rates below 5% are raised to 5%.
  • Affected vanilla rare items are given an additional +5% drop rate.
  • Doubles the amount of money that drops from enemies.
  • Some enemies will drop items that they normally will only drop in certain biomes.

It is obtained from opening a Starter Bag or by crafting it at a Demon Altar or Crimson Altar.

Crafting[edit | edit source]

Recipe[edit | edit source]

Crafting Station
Demon Altar.png Crimson Altar.png
Demon/Crimson Altar
Ingredient(s) Amount
Defiled Rune.png Defiled Rune 1

Affected Drops[edit | edit source]

The following items' drop rates are increased by 5% or more while the Defiled Rune is active.

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Unique Drops[edit | edit source]

While the Defiled Rune is active, some enemies will drop items anywhere that they normally will only drop in certain biomes or normally do not drop at all. The following items' drop rates are increased to 5%.

Enemy Item
Armored SkeletonArmored Skeleton Bone SwordBone Sword
CryonCryon AmarokAmarok
HopliteHoplite Bone SwordBone Sword
Sun BatSun Bat Hel-FireHel-Fire
Skeleton ArcherSkeleton Archer Bone SwordBone Sword

Notes[edit | edit source]

  • If used while a boss is alive, it will instantly kill the player and despawn any active bosses.
  • The effect of this item tends to cause some bosses to spawn twice at the same time.
  • All drop rates of rare variant items are not affected by the defiled rune boost.
  • Although it disables wings, using the Rocket Boots or any of its upgrades up to Celestial Tracers will allow for brief flight.

Trivia[edit | edit source]

  • This item is a reference to the Defiled Chalice from the game Bloodborne, and it had some similar functions to it previously.
  • In previous versions of the mod, this item used to halve a player's max HP and increase enemy damage resistance by 50%.