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A Lump of Coal is a passive item.

Effect[ | ]

  • Tears gain a flat damage bonus of about +0.5-0.6 per tile of distance traveled, unaffected by all multipliers. There is no upper limit to the bonus.

Notes[ | ]

  • The item has somewhat of an opposite effect of the item Collectible Proptosis iconProptosis, which makes Isaac deal more damage at close range. Proptosis is based on a shrinking multiplier instead of an increasing flat bonus, however.
  • Multiple instances of A Lump of Coal grants no additional effect.

Synergies[ | ]

  • (except in Repentance)Collectible Godhead iconGodhead: Tears' auras will increase in size and damage the farther they travel.
    • (in Repentance)Collectible Godhead iconGodhead: Tears' auras will increase in size the farther they travel. The damage of the auras is unaffected.
  • Hook WormHook Worm: The movement pattern increases Coal's damage at the same effective distance.
  • Collectible The Ludovico Technique iconThe Ludovico Technique: Increases the tear's damage and size the farther the tear is from Isaac.
  • Collectible My Reflection iconMy Reflection: Hitting enemies with tears that initially missed will grant possibly considerable extra damage.
  • (in Afterbirth † and Repentance)Collectible Pop! iconPop!: Tears will increase their damage and size as they travel, and they are not limited by range.
  • Collectible Soy Milk iconSoy Milk: Coal's flat damage increase is not affected by Soy Milk's multiplier, so tears gain the full benefit from Coal.
  • Collectible Tiny Planet iconTiny Planet: The movement pattern allows much longer airtime and reasonably easy way to hit enemies with the powered-up tears.

Interactions[ | ]

  • Collectible Anti-Gravity iconAnti-Gravity: Despite the tears visually growing while they hover, they will still only deal bonus damage based strictly on how far they travel. If the enemy hits the tears by running into them, Coal will add no damage.
    • (in Afterbirth † and Repentance) Tears no longer grow while hovering.
  • (in Rebirth and Afterbirth)Collectible Athame iconAthame: Damage of the Athame ring is halved.
    • (in Afterbirth † and Repentance) The ring deals normal damage.
  • (in Rebirth)Collectible Brimstone iconBrimstone: +2 flat damage.
    • (except in Rebirth) Beam will gradually increase in size and damage the farther it travels, on a multiplier that is roughly +20% per tile of distance.
    • Brimstone + Collectible The Ludovico Technique iconThe Ludovico Technique: Makes the Brimstone circle widen and deal damage based on how far away it is from your character. (except in Repentance) While Isaac is in the center of the circle, the damage is reduced to about 50% (unlike normal Coal effects).
  • (in Repentance)Collectible C Section iconC Section: Just as expected, fetuses deal more damage a tick the longer they travel.
  • Collectible Dr. Fetus iconDr. Fetus: No benefit though the bombs appear darker.
  • Collectible Epic Fetus iconEpic Fetus: No benefit.
  • (in Afterbirth † and Repentance)Collectible Lachryphagy iconLachryphagy: Tears will grow until they burst, though their actual damage bonus is only based on distance traveled. Burst tears will also grow as they travel.
  • Collectible A Lump of Coal iconA Lump of Coal: No benefit from an additional Lump.
  • (in Rebirth and Afterbirth)Collectible Maw of the Void iconMaw of the Void: Damage of the Maw ring is halved.
    • (in Afterbirth † and Repentance) The ring deals normal damage.
  • Collectible Mom's Knife iconMom's Knife: No benefit. The Knife becomes a very dark brown.
  • (except in Repentance)Collectible Proptosis iconProptosis: The damage of the tears decreases at about the same rate it increases, resulting in them dealing approximately the same damage at any range.
    • (in Repentance): Slightly increases the range and damage of Proptosis tears.
  • Ring WormRing Worm / (in Afterbirth † and Repentance)Ouroboros WormOuroboros Worm: The peculiar movement patterns result in overall less damage from the same effective distance.
  • (in Rebirth)Collectible Technology iconTechnology / Collectible Technology 2 iconTechnology 2: No benefit.
    • (except in Rebirth) Damage increases the further away the enemy is, on a multiplier that is roughly +20% per tile of distance.
  • (except in Rebirth)Collectible Tech X iconTech X: The laser ring will grow as the ring distances itself from the player, but will shrink as the player approaches it. Damage increases the further away the enemy is.
    • (in Repentance) The damage increase per tile is significantly lower.
  • (in Afterbirth † and Repentance)Collectible Trisagion iconTrisagion: The damage of the blasts is increased by a negligible amount and will be increased further if Isaac has an item that extends the length of the beams such as Collectible My Reflection iconMy Reflection.
    • (in Repentance) The damage of the blasts will not be increased unless Isaac has an item that extends the length of the beams such as Collectible My Reflection iconMy Reflection.

In-game Footage[ | ]

Trivia[ | ]

  • In Western culture, children are commonly told that if they behave badly during the year, they will receive a piece of coal for Christmas.
    • This makes A Lump of Coal a fitting item for Krampus to drop, based on his origins.

Bugs[ | ]

Bug Bug! In Greed Mode, if Isaac picks upCollectible A Lump of Coal iconA Lump of Coal in a Silver Treasure RoomTreasure Room and then fights Boss Krampus ingameKrampus,Collectible A Lump of Coal iconA Lump of Coal may still drop after the fight. Since this item's effect does not stack with itself, this will give Isaac a useless item.


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