Yu-Gi-Oh!: I use an Orichalcos deck

Yuki is a gaming ace, and collecting cards is his hobby.
Due to an accident, he was transported to the world of Yu-Gi-Oh! GX, carrying the cards he had collected in his previous life.
Fake cards with ridiculously powerful effects, such as Orichalcos, Dark Wizard, Martyr, Phantom Girl, Dark Magician Red General, Blue-Eyes White Dragon Girl Kisara, etc.
But these cards seem to work...?
Professor Kuros: "My goodness, this Yuki is cheating! One Orichalcos God-like move and I'm gone."
Jaden Yuki: "Yuki, let's duel! Wait, how did you acquire a hero? What the hell are Evil Hero and Evil God?!"
Rizenaka Kagemaru: "What kind of deck is Orichalcos? My three Phantom Demons can't even beat it!"