# Stamp of Approval Stamp of Approval represents Unstable's playful approach to silver-bordered design. As an uncommon from this silver-bordered set, it occupies a unique space in collecting—it's legal only in casual play and Un-formats, which limits its competitive appeal but appeals to players who value humor and creativity over tournament viability. Collectors typically view Unstable cards as novelty pieces that showcase Magic's experimental side. The card's existence matters primarily to completionists building full Unstable sets or those drawn to the set's irreverent aesthetic. Both foil and nonfoil versions exist, though foil variants command modest premiums among Un-set enthusiasts. These cards remain niche collectibles rather than mainstream chase pieces.