The Legacy Advantage is a secret advantage that can only be used at certain Tribal Councils. If the castaway wielding the Legacy Advantage is eliminated anytime earlier than the said day, the castaway must will it to another castaway still in the game. Through the player's final words confessional, the person voted out with the Legacy Advantage will state who will inherit the advantage note. The advantage would then be tucked by production inside the new owner's bag in private. This goes on until the advantage's intended day of use, in which it can be played similarly to a Hidden Immunity Idol at that night's Tribal Council.
On Day 36, Ken was allowed to read the contents of the Legacy Advantage envelope, indicating that it gives its final owner immunity at the immediate Tribal Council, and must be played similarly to the regular Hidden Immunity Idol; it had to be played after the votes had been cast, but before they were read. Ken used the advantage, which cancelled Jay Starrett's vote against him.