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

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 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 Lemegeton Lemegeton or items given by Dice Bag Dice Bag).


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


  • Added in RepentanceAlabaster Box Alabaster Box: Causes the Alabaster Box to yield rewards without destroying the item or depleting any of its current charges.
  • Blank Card Blank Card: Teleports Isaac to the I AM ERROR 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 Afterbirth † / Removed in RepentanceD1 D1 + 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 RepentanceDiplopia 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 †Glowing Hour Glass Glowing Hour Glass: Since the card replicates the effect of moving back one room to the previous state, Isaac keeps the card having not used it as an item until the room later. This effectively gives him charge-free uses of the Glowing Hour Glass.
    • Added in Afterbirth † The card is no longer refunded if you enter the room with it in your inventory and use it. But if you enter a room, drop it, leave the room, come back and pick it up and use it in that room. You do get a refound as the next time you enter the room the card will be in the floor. This allow for infinite uses.
  • Added in Afterbirth † / Removed in RepentanceTarot Cloth Tarot Cloth: ? Card is used twice, giving the active item the same effect as if Isaac 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 I AM ERROR room in game, alongside Added in AfterbirthTeleport 2.0 Teleport 2.0 in certain circumstances, using Added in RepentanceRed Key Red Key to go beyond the 13x13 level grid, and Undefined Undefined.
  • Added in Afterbirth † Before Booster Pack #5, Added in AfterbirthGlowing Hour Glass Glowing Hour Glass was limited to 5 uses, and uses of the ? Card counted against that limit.