Yu Gi Oh!'s SPEED DUEL Format, a format mostly focused on OG era cards only, will no longer receive support. ResetEra In each box of Speed Duel: Battle City Finals you will find Prismatic Secret Rare versions of Slifer the Sky Dragon, Obelisk the Tormentor, and The Winged Dragon of Ra! You'll also What are Speed Duel cards and how do they work in Yugioh? Speed Duel Tutorial Part 1 Yu Gi Oh! YuGiOh Speed Duel Attack from the Deep Booster Pack 4 Cards Konami ToyWiz YGOrganization [SBC2] Yami Marik and Mai's Skills from Speed Duel Battle City Finals