This is a Poke ball that will catch any Pokmon without fail. 게임에서 다른 마스터볼을 얻을 수 있지만 이것은 세 번째 체육관을 이긴 후에야 얻을 수 있습니다. What you would want a Master Ball at this stage in the game for I have no idea, but its worth knowing, after all two balls are better than one.