Nari Nari no Mi

The Fei Fei no Mi is a Paramecia-type that grants the user the ability to change the  of inorganic materials after touching them, making the user a Phase-Changing Human (フェイズ転移人間, Feizu Teni Ningen). After stealing it from ???, it was eaten by Merrily Rowing.

Etymology

 * "Fei" is short for feizu (フェイズ), the Japanese way of pronouncing the word "phase".

Trivia

 * Thanks to User:Ash9876 for the concept.