Dead Joker's Teardrop

The Dead Joker's Teardrop is a Code Card originally owned by Koichi Abe, currently in possession of Kazuo Abe.

This card's ability is "counterfeiting". It can store a large amount of data and assume different configurations. Koichi created a large number of configurations and stored them in this card, making it truly a "joker" which can be used in a number of situations.

Kazuo first uses this card against Nishio. After that, he could slowly learn how to use the Code Card to its fullest, using its abilities to copy and counterfeit a number of powerful rare cards from his numerous opponents. Even though Kazuo was defeated in most of his duels, he could've been able to copy strong cards from each of those duels, resulting in him creating a whole counterfeit Deck of powerful cards he copied.

Yu-Gi-Oh
The Dead Joker's Teardrop currently contains three distinct Yu-Gi-Oh configurations: one of a Monster Card, one of a Spell Card, and one of a Trap Card.

Since it's a Code Card, regular cards cannot be activated, for example, to negate its activation or effects, also, its effects overrule any regular card's, such as Nishio's "Stone Pillar of the Trinity", whose immunity effect couldn't protect itself from "Dishonest Chamber".

Monster Configuration: ??? Spell Configuration: Dishonest Chamber Trap Configuration: ???