The MTG Secret Lair x Marvel: True Believers in Love Foil Edition is a special limited edition box set featuring 6 foil cards from the Secret Lair set of Magic: The Gathering. Produced by Wizards of the Coast in the United States, this collectible card game product is focused on the theme of love and faithfulness, with each card showcasing characters and stories from the Marvel universe. The box set comes in standard size and is in English language, making it a sought-after item for fans and collectors of both Magic: The Gathering and Marvel.