The Nerf Rebelle Secrets and Spies Secret Shot blaster comes with a decoder that reveals secret messages on Message Darts. When you are on a mission, give it a friend so she can reveal a message you send to her. You can also use the decoder to reveal messages your fellow spies send to you with their own Message Darts. Look stylish and be ready for spy adventures with the Nerf Rebelle Secrets and Spies Secret Shot blaster!