The Blank Card is an activated item introduced in The Binding of Isaac Rebirth. It is a card with a white, blank face.


On use, it replicates the effect of the card or rune you currently have. Despite them occupying the same slot, the Blank Card will not mimic Pills.


Jera: The Blank Card allows repeateed use of the Jera rune. Using this synergy with a room containing at least 2 batteries will result in a net increase in the number of batteries, which can be repeated to effectively give infinite Blank Card charges on a floor.