One Piece Episode 371 -

During the battle against the Straw Hat Pirates, Moria demonstrates that by manipulating a person's shadow, he can force their physical body to change its shape as well.

The episode concludes with the debut of , who arrives to challenge Moria and Oars. One Piece Episode 371

Moria systematically takes down several Straw Hats, including Nico Robin, Sanji, and Chopper. During the battle against the Straw Hat Pirates,

In , the "useful feature" refers to Gecko Moria's ability called Shadow Revolution . Shadow Revolution: Moria’s Manipulative Power including Nico Robin