The Idol Nullifier is a talisman that can be used at Tribal Council. If the castaway wishes to use it, he must do so while casting his or her vote. At the voting booth, the user must write the name of the intended target on the nullifier and place it in the voting urn, along with his or her vote. If an idol is played on the intended target, the host will verify its authenticity, but will also present the Idol Nullifier, informing the player that the idol has been rendered powerless. If the target does not play an idol, the advantage will be wasted and its user will remain anonymous if he or she chooses to be.
An Idol Nullifier can only negate one Hidden Immunity Idol, so it can be countered if a second Hidden Immunity Idol is played for the target.