Red Mantis is special, because it allows you to swap any two influence cubes in different Key Areas on the map with one another. You may swap your cubes this way to help you gain control over particular Key Areas, or you may swap out your opponent's cubes to either help someone else, or make the situation beneficial for yourself.
You can use either Blackmail or Gold tokens to bid on this spot.
If playing with 5-6 players, Red Mantis can't target influence cubes of a player that is currently controlling the Seawatch Tower.