Were you looking for something else? Check out the disambiguation page. True Ninja is a hard difficulty stamp in Club Penguin Rewritten. It can be obtained by earning your Black Ninja Belt in Card-Jitsu. Gallery The stamp being earned.As seen in a Stamp Book.Add a photo to this gallery Retrieved from "https://club-penguin-rewritten.fandom.com/wiki/True_Ninja_Stamp?oldid=182458" Categories: Stamps Hard Stamps Game Stamps Card-Jitsu Stamps Card-Jitsu Community content is available under CC-BY-SA unless otherwise noted.