individual trading card sleeves Sleeves: Various Sizes and Finishes use a 5 GameStop Trading Card Binder Sleeves

Or, Im reading way too much into an art direction oopsie from 30 years ago

Credit Card Skin: exciting cool designed skin stickers to decorate and customise your Credit or Debit card

For Fusion Summoning, they can compensate for the heavy costs required for Fusion Summoning from the hand/field, as these effects can be triggered when "Shaddoll" monsters are sent to the GY as Fusion Materials when resolving a Fusion Summoning effect

few strategies use the Extra Deck like Dogmatika does

The company went public on the Osaka Securities Exchange in 1984, the Tokyo Stock Exchange in 1988, and the London Stock Exchange in 1999

If the person leaves the room, or otherwise obscures themselves from your view, the last ability will stop having any effect