Foundations Premium Alcove Flip Deck Box for Magic: The Gathering. The Alcove Flip Deck Box for Magic: The Gathering features a vibrant, full-color leatherette finish, strong magnetic closure, and dual thumb notches for easy access to your deck. Store and protect up to 100 standard size trading cards double-sleeved in Ultra PRO Deck Protector sleeves. Lid can be detached from either side of the box for easy access to your deck.