I'm a Threat, but They Don't Need to Know That

This is the 10th episode of Survivor: Comoros

Challenges
Reward Challenge: O-Black Water The castaways are divided into two teams of five. One at a time, each castaway will cross an obstacle course. Once all five members have completed the course, they will dive into the water for a grappling hook, which they will use to secure five rings. The first team to grab all their rings wins. Teams are selected by Schoolyard Pick, the person not picked will be immediately sent to Exile Reward: An overnight Spa visit Featuring Massage Therapy, Skin/Hair Care and Food

Winner:

Immunity Challenge: Domino Effect Players must stack all of their pieces like a line of domino tiles while avoiding tripwires that would topple the tiles that were already stacked. Once all of the blocks have been properly stacked, the castaway would start a chain reaction which would be enough to trigger a mechanism which will release a ball rolling to a bowl, releasing a flag. The first castaway to raise their flag would win. Winner: