Structure Deck: Synchron Extreme YuGiOh TCGplayer Which structure deck is next? With Atlantean getting support in ROTA, and cyber dragons getting Tactical try, I think Heroes are next. The next Core set Supreme Darkness hints at GX, plus YuGiOh! Synchron Extreme Structure Deck :: Sealed Cards Only No Box! ::: Unicorn Cards YuGiOh!, Pokemon, Digimon and MTG TCG Cards for Players and Collectors. Synchron Extreme Structure Deck (TCG) Card Set YGOPRODeck