Before we talk about printing and sizes, there is another kind of proxy card to mention
There is no judge or jury in arbitration, and court review of an arbitration award is limited
Graded and encapsulated by Certified Guaranty Company (CGC) Gem Mint 10, sealed in the official CGC slab for verified authenticity
Aggressive decks will want cheaper dragons, too, so I don't see many decks wanting this
Magari per rimbalzare Breaker in mano e ripetere il suo effetto o per salvare Legendary Ocean prima di tirare una Tempesta Potente
This exclusivity, combined with many copies of the card becoming unplayable through warping (due to being a foil-only), lead many to become totally disenfranchised with mechanically unique promos in competitive play