The mechanic activates if a player intentionally damages or kills their teammates. After a certain amount of friendly fire damage has been dealt, the offending player will start to damage themselves. Additionally, they will no longer be able to damage teammates. If a player kills a teammate, the affected player will have the option to confirm if the kill was intentional or not. If confirmed, the system will issue a warning, with the next offense resulting in a removal from the match. If the kill was marked as unintentional, the system will not issue a warning. Should no action be taken by the affected player, a warning will be issued by default.