? Card

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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
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5.300.48
 
 
Added in Afterbirth

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

Effect[edit | edit source]

Notes[edit | edit source]

  • The ID of this card was 43 before the Afterbirth+ expansion.

Interactions[edit | edit source]

  • Car Battery Car Battery: Does not duplicate the effect of the active item, activates it only once.
  • Diplopia Diplopia: Expends both the card and the item with no additional benefit.
  • Forget Me Now Forget Me Now: Expends both the card and the item with no additional benefit.
  • Jar of Flies Jar of Flies: Expends both the card and all charges with no additional benefit.
  • Added in Afterbirth †Mama Mega! Mama Mega!: Expends both the card and the item with no additional benefit.
  • Added in Afterbirth †Mystery Gift Mystery Gift: Expends both the card and the item with no additional benefit.
  • Pandora's Box Pandora's Box: Expends both the card and the item with no additional benefit.

Synergies[edit | edit source]

  • 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 The Chest The Chest or Dark Room Dark Room, will instead spawn an I AM ERROR shopkeeper.
  • 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 †Tarot Cloth Tarot Cloth: ? Card is used twice, giving the active item the same effect as if you had Car Battery.

Trivia[edit | edit source]

  • 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 three reliable ways to reach the I AM ERROR room in game, alongside Teleport 2.0 Teleport 2.0 in certain circumstances and Undefined Undefined.
  • Added in Afterbirth † Before Booster Pack #5, Glowing Hour Glass Glowing Hour Glass was limited to 5 uses, and uses of the ? Card counted against that limit.


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