Island of the Idols (twist)

Island of the Idols is a twist used in  and is the titular twist of its 39th season.

Premise
The Island of the Idols appears to be a variation of where castaways may wager their vote to play a game of chance in exchange for game advantages. However, instead of a lottery, castaways will be mentored and challenged by two former Survivor winners, Rob Mariano and Sandra Diaz-Twine.

The island prominently features giant busts of Rob and Sandra. As stated in an oath recited by Rob and Sandra to each castaway sent to the island, both mentors are not competing for the million dollar prize, though they live under the same conditions as the actual contestants, albeit with better supplies and rations.

At random points in the game, castaways will be banished to the Island of the Idols, where they will be welcomed by Rob and Sandra. The mentors will teach the castaways survival skills and winning strategies. The castaway will then be given a choice to take the mentors' challenge. If a castaway accepts and passes the challenge, the mentors will award them an advantage in the game such as Hidden Immunity Idols or Extra Votes. However, if a castaway loses the challenge, the contestant loses the right to vote the next time he or she visits Tribal Council. If a castaway refuses to take the challenge, Rob and Sandra may tempt them into taking it.

Previous disadvantages imposed by and Ghost Island such as the castaways being away from their tribe, ostensibly from its social dynamics, remain.

Trivia

 * Rob Mariano and Sandra Diaz-Twine are the second and third Survivor winners to return as mentors to the current group of castaways, following John Cochran who appeared in, though only for one episode.
 * Elizabeth Beisel is the first person to be sent to the Island of the Idols.
 * She is also the first person to lose the mentors' challenge
 * Kellee Kim is the first person to win the mentors' challenge.
 * She is also the first person to refuse the original challenge, and then accept it when the idol is improved.
 * Vince Moua is the first male to be sent to the Island of the Idols.
 * He is also the first person to be sent to the Island of the Idols and be eliminated at the next Tribal Council.