These Zones are exclusively used for playing monster from the Extra Deck
Many of these cards are of the Special Art Rare (SAR) raritythey are never reprinted in English and thus solely exist in Japanese
They in fact have 19 full-time employees with varied skill in the Pokmon TCG that playtest new Pokmon TCG cards
UPDATE (2/19/20): Breaking News A one-of-a-kind basketball card with an NBA logo patch of Michael Jordan and Lebron James' jerseys sold for $900,000 in February of 2020 through Goldin Auctions
Deck 9 10 Odd-Eyes Persona Dragon Pendulum Monster Effect Monster - 5 Dragon 1200 2400 Pendulum EffectOnce per turn, during the End Phase, if your opponent activated a card or effect this turn that targeted 1 "Odd-Eyes" Pendulum Monster you controlled (and no other cards) while this card was in your Pendulum Zone: Special Summon this card, and if you do, place 1 face-up "Odd-Eyes" Pendulum Monster from your Extra Deck in your Pendulum Zone, except "Odd-Eyes Persona Dragon".Card TextOnce per turn (Quick Effect): You can target 1 face-up monster on the field that was Special Summoned from the Extra Deck
Weakness: Fire (x2) Resistance: none Retreat: 3 Salandit - Fire - HP70 Basic Pokemon [R] Ember: 30 damage