Binding of Isaac: Rebirth Wiki
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Blank Card is an unlockable activated item.

Effects

  • Mimics the effect of Isaac's held card or rune.
    • Does not consume Isaac's current held item.
    • Will not mimic pills.

Synergies

  • (except in Rebirth)Collectible Car Battery iconCar Battery/(in Afterbirth † and Repentance)Collectible Tarot Cloth iconTarot Cloth: Essentially uses the card or rune twice. If used with the Two of Hearts/Diamonds/etc. cards it will quadruple however much you have, and if used with a Jera rune it will quadruple the number of pickups in the room.
    • Car Battery + Tarot Cloth: The card is used 4 times at once.
  • (except in Rebirth) 2 of Diamonds + (except in Rebirth)Collectible Restock iconRestock or in Greed mode, coins can be infinitely generated by buying Lil' Batteries. As Lil' Batteries only cost 5 cents, as long as Isaac starts with at least 11 cents, the maximum of 99 cents can be quickly reached.
  • (except in Rebirth)? Card? Card: Teleports you to the I AM ERROR room. This will consume both the Blank Card and the ? Card.
    • An exception is when they are used on Error: The given stage ("The Chest") does not exist., Dark RoomDark Room or Ultra Greed floors. Using them here consumes both the Blank Card and the ? Card and spawns an I AM ERROR Shopkeeper.
  • Rune of JeraRune of Jera: Allows Isaac to copy pickups with every use. This combination can double Lil' Batteries, which can allow for game-breaking combos, due to repeated use of the synergy.
    • Spawning too many items will cause objects to despawn. This can even despawn the End Chest after finishing a final boss fight.

Interactions

  • Collectible Little Baggy iconLittle Baggy: Renders the Blank Card useless since all cards and runes are transformed into pills, unless the player also has Collectible Starter Deck iconStarter Deck.

In-game Footage

Unlockable Achievements

Gallery

Seeds

PC Hard mode only K9B6 DYHA (Treasure Room adjacent to spawn)

PC Normal mode only 3C6Z 880R (Within Shop)

PC Hard mode only E8XS 8371 (Within Shop, rune of Jera inside Curse Room, all in first floor)

PS4 GRCJ PCSP (Treasure Room adjacent to spawn)

Vita 9B2E 2XBZ (Treasure Room adjacent to spawn)

Switch Hard mode only NHAW AKAD (Room south of the first floor's Boss Room, requires a character with flight)


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