2021 mystery booster box Pack (Convention Edition 2021) a unique collection designed for passionate players and collectors Mystery Booster: Convention Edition Booster

This has also come with a ban/limitation to many of the cards, and that applies to the decks below

And if you send Super Soldier Soul to the GY with Kaizas effect, you can even banish Soul from the GY to give you the choice of Knight to tutor to hand for use as the hand Ritual material for Synthesis

It's often tied abstractly to their perceived collectibility and desirability as pieces of artwork

The Claw of Hermos Type Spell Card Archetype Legendary Knight TCG Date 2015-07-16 OCG Date 2015-05-16 Card Text (This card is also always treated as "Legendary Dragon Hermos".) Send 1 monster from your hand or field to the GY, of the Type that is listed on a Fusion Monster that can only be Special Summoned with "The Claw of Hermos" (if that card is Set, reveal it), then Special Summon that Fusion Monster from your Extra Deck

Each token has a different way to acquire them, making them highly unique