Card-Jitsu Shadow

Card-Jitsu Shadow is an upcoming game in Club Penguin, which is the final part of the Card-Jitsu Series. There is loads of proof that Card Jitsu Shadow will come for example;
 * Shadow Ninja Costume
 * Happy77 was wearing this
 * Card Jitsu Shadow Powercard (This is obtainable through codes in the Card Jitsu Water - Second Wave packs)