16 slot card binder Pocket Binder, 1000+ Premium Zip Trading Card Binder, Double Sided Pocket Card Album, Ringless Card Folder for MTG, TCG, Sports Card (Blue, 16Pockets) : Toys & Games free non Vault X: 16-Pocket Exo-Tec Zip

This could have a couple of uses

Packaging Disclaimer: Packaging and boxes are designed to protect the contents inside

In fact, I can think of at least two other cards for which exactly one copy exists

Playing an early White Plume Adventurer or Seasoned Dungeoneer and holding onto the Initiative is an extremely effective strategy, and Solitude being a zero mana removal spell helps make sure you can keep the Initiative yourself

EXFO-JP020 Shishou no Jack Knights (Jack Knight of the Lavender Dusk) Level 8 LIGHT Psychic Effect Monster ATK 2500 DEF 2000 You can only Special Summon a card(s) with this cards name once per turn via the method written in the (1)st effect with this cards name

They are placed after Full Arts, but before Hyper Rares and Gold Cards if printed outside of a holiday sets