UR Ultra Rare Photon Thrasher X LIGHT Level 4 [ WarriorEffect ] ATK 2100 DEF 0 Cannot be Normal Summoned/Set
As long as neither player is manipulating their library or using their graveyard, using a Millstone does nothing but reveal information until the player being milled runs out of cards, but it took more explanation than you can possibly imagine to make players understand this
Even if its removed immediately, the lands it gets are hard to interact with
A great window design for displaying your favorite card
Enchantment subtypes (Aura, Saga, Role, Class)
Collectors shared screenshots of their scanned collections, traders used it for real-time valuations, and parents finally had a way to check if their kids' cards were valuable