Season 21 introduced the Medallion of Power which can be used to give an advantage in an immunity challenge. Once used, it is then transferred to the opposing tribe.

( Cut for length and possible rude words. I can't really remember. )

No, not that one, the other one. You know, the one that rips off "The Daemons".

( No, NOT the movie with Robin Williams and Robert De Niro... )