Idol Bonds is a twist that featured in Survivor: Moral vs. Merciless. It is a twist to Hidden Idols, where each castaway is forced to team up with someone from the opposite tribe in order to make it to the merge and receive a Hidden Idol to share between them. It is the opposite of the Idol Rivals twist in East Timor.
Each castaway in the season is secretly 'bonded' with a player from the other tribe. This player may or may not be familiar with their partner, but either way, they both have to make it to the merge to receive a Hidden Idol to share. If a member of a bonded duo gets voted out pre-merge, the chances of the other castaway receiving an idol for the merge is gone. To add salt to the wound, if a player gets three or more un-voided votes at a pre-merge Tribal Council without being voted out, then their idol partnership will be revealed publicly, so all castaways know one of the idol bonds they should split up to avoid too many idols being present in the endgame. The way a shared idol works is simple - the first to play the idol gets it's worth, the other goes without.
In Survivor: Moral vs. Merciless, two idol bonds remained intact at the merge. They were Dana M./Tony I. and David S./Jamie G.. Dana & Tony's idol was used by Tony on Wyatt A. to void three votes, while David & Jamie's idol was used by David on Nick M. to void six votes, saving Nick from elimination.