One Piece: The Emperor-Level Item Master Shocks the World

Transmigrating to the world of One Piece, Rayleigh becomes an outcast of the Rocks clan.
He inherited the will of the D clan and activated the Myriad Realms Treasure Mirror System!
As long as you keep doing tasks, you can keep forging treasures!
[Ding! Congratulations, host, you have created a Twelve Talisman Pig with captivating, mesmerizing eyes!]
[Ding! Congratulations, host, for creating the Twelve Talisman Rabbits, now at lightning speed!]
[Ding! Congratulations, host, you have created the Mangekyou Sharingan, Eternal level!]
……
As each Noble Phantasm was successfully forged.
Reilly boarded the ship in Shells Town!
He became the Straw Hat crew's most mysterious prop master!
Luffy: "After training in the [Time Chamber], my Devil Fruit has awakened!"
Zoro: "I wanted a famous sword? Leero gave me the 'Ryujin Jakka'!"
Kaido: "My Zoan-type army was wiped out by a Poké Ball!"
Everyone: This prop master is terrifying!