|MAKE SURE YOU HAVE AT LEAST 80 REP, OR THIS WILL NOT WORK.| talk to moonheart when you become a warrior, and then go collect the moss ball from the warriors cave. go to the shore and place it on the red X, go away from shore, and then wait until midnight. when midnight comes, go back to the shore, and Mosskit/Moss-shadow should be there. talk to her, and you should bring her to Bramblestar, and you will become leader!