Magic: The Gathering's "Un-" sets have been around since 1997.
Magic Untapped cracks open a booster pack of the 1997 Magic: The Gathering parody set Unglued.
There is a good reason why Wizards of the Coast first began designing and publishing preconstructed decks for Magic: The Gathering's Commander format (and the reason might surprise you).
Magic Untapped cracks open a Collector Booster of Dominaria United.
Magic Untapped, along with special guest Dork4Short, opens up a booster pack of Invasion from the year 2000.