What does this card's "This card's number is treated as [P-058], and you can only include up to 4 copies in your deck together with [P-058]" mean, exactly?
Show ruling
Official Ruling
This card is treated as a card with the same card number as [P-058 Gammamon].This is a special rule, not an effect. Therefore, this text applies when the card is in your hand, breeding area, or any other area. In addition, you can only include up to 4 copies of this card and/or [P-058 Gammamon] when building a deck.
