Binding of Isaac: Rebirth Wiki
Binding of Isaac: Rebirth Wiki
Special Cards
Rebirth Suicide King Chaos Card Credit Card Rules Card A Card Against Humanity
Added in Afterbirth Afterbirth Added in Afterbirth Get out of Jail Free Card Added in Afterbirth Emergency Contact Added in Afterbirth Dice Shard
Added in Afterbirth † Afterbirth † Added in Afterbirth † Holy Card Added in Afterbirth † Huge Growth Added in Afterbirth † Ancient Recall Added in Afterbirth † Era Walk

Added in Afterbirth

? Card is a special card added in The Binding of Isaac: Afterbirth.


  • Replicates the effect of Isaac's activated collectible.
    • Removed in Repentance Single-use items, such as 15►Pandora's Box Pandora's Box, will not replicate but instead activate and disappear.
    • Added in Repentance Single-use items do not disappear after using ? Card, allowing for potential multiple uses of the items.


  • The ID of this card was 43 before the Afterbirth+ expansion.
  • Added in Repentance Doesn't work with activated items in a consumable slot (such as Tainted Bethany Tainted Bethany's Added in Repentance15►Lemegeton Lemegeton or items given by Added in RepentanceDice Bag Dice Bag).


  • 15►Car Battery Car Battery: Does not influence the card's effect, activating the active item only once.
  • 15►Jar of Flies Jar of Flies: Expends both the card and all charges with no additional benefit.


  • Added in Repentance15►Alabaster Box Alabaster Box: Causes the Alabaster Box to yield rewards without destroying the item or depleting any of it's current charges.
  • 15►Blank Card Blank Card: Teleports the player to the I AM ERROR room of the current floor. This will consume both the Blank Card and the ? Card. If done on Chest Chest or Dark Room Dark Room, will instead spawn an I AM ERROR shopkeeper.
  • Added in RepentanceAdded in Afterbirth †15►D1 D1 + Added in Afterbirth †15►Schoolbag Schoolbag: ? card can be duplicated with the D1, allowing for single use items to be repeatedly used on effectively a 4 room charge.
  • Added in Repentance15►Diplopia Diplopia: Duplicates all pedestal items and pickups in the room, without expending Diplopia.
    • If used with another ? Card dropped on the floor in the room, allows for infinite duplication.
  • Removed in Afterbirth †15►Glowing Hour Glass Glowing Hour Glass: Since the card replicates the effect of moving back one room to the previous state, you keep the card having not used it as an item until the room later. This effectively gives you charge-free uses of the Glowing Hour Glass.
    • Added in Afterbirth † The card is no longer refunded.
  • Added in Afterbirth † / Removed in Repentance15►Tarot Cloth Tarot Cloth: ? Card is used twice, giving the active item the same effect as if you had Car Battery.


  • The interaction with Blank Card presents a paradox, as Blank Card and ? Card try to replicate the effects of each other. This would result in an endless loop, so a special case was put in.
  • The Blank Card interaction is one of the four reliable ways to reach the I AM ERROR room in game, alongside Added in Afterbirth15►Teleport 2.0 Teleport 2.0 in certain circumstances, using Added in Repentance15►Red Key Red Key to go beyond the 13x13 level grid, and 15►Undefined Undefined.
  • Added in Afterbirth † Before Booster Pack #5, Added in Afterbirth15►Glowing Hour Glass Glowing Hour Glass was limited to 5 uses, and uses of the ? Card counted against that limit.

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