*Updated through Tumblr Survivor: Challengers Vs. Champions During the tribal phase of the game, the tribes vie for the ownership of the Immunity Idol. The winning tribe will be granted safety from the upcoming Tribal Council.
In rare cases, there are double eliminations and both tribes go to Tribal Council, where the Immunity Idol temporarily retires and is replaced with the Immunity Necklace which is usually only available post-merge. But after the double boot twist, the idol returns until the merger.