It is not a full routine itself, but you can use Mental Wave to implant a specific word into one person's mind.
You can use it during the preshow phase, and refer to it during the show, like challenging another participant to reveal or find that implanted word. This word revelation can be used as a powerful finale in a PK touch or synchronization routine, or it can serve as a captivating introduction to inductions for hypnosis.
You can also use it as part of a one-ahead routine as a forced word. The key is to make the choice appear random and unrestricted. It will be dual reality, the participant will be amazed about getting the word, the audience will think it was a free choice. Have a great script that builds up dual reality.