what is a extra deck in yugioh What is the Extra Deck?
Description
According to the pokemon website linked above they say to download the cards

1 etched foil promo card featuring Shiny Sprigatito, Shiny Fuecoco, or Shiny Quaxly

x1] [Once per turn] When a character with the trait "Impel Down" leaves the field, you can activate this effect
You cannot conduct your Battle Phase the turn you activate this card.

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