Seto Kaiba and Duel Machine ' s Duel Seto Kaiba and the Duel Machine faced each other in a game of " Duel Monsters " , before the Battle City arc , in the " Yu - Gi - Oh ! " anime . It is based on Seto Kaiba and Duel Machine ' s Duel from the " Yu - Gi - Oh ! " manga . This duel takes place before the Battle City arc officially begins . Prior Events . Yugi and Téa Gardner continue on their date from The last episode and head to the museum . there they meet Ishizu Ishtar and find the same stone tablet Kaiba saw Two nights before . Ishizu informs Yugi a great evil will soon arise and to combat it , Yugi will need the Egyptian God cards . Meanwhile , at KaibaCorp , Seto Kaiba is testing out his new and improved Duel Disk . Mokuba Kaiba is on standby with other KaibaCorp personnel , who informs the former that the Duel Machine will be using the deck Kaiba used in Duelist Kingdom . Kaiba uses this as a test to try out the Egyptian God card , Obelisk the Tormentor , which Ishizu lent him for the Battle City Tournament he was hosting . The test proceeds when two holographic display apparati launch from the Duel Disk , and the duel commences . Featured Duel : Seto Kaiba vs . Duel Machine . Turn 1 : Duel Machine Duel Machine draws . It then Set s a monster . Turn 2 : Kaiba Kaiba draws " Battle Ox " . He then Set s a card and Normal Summon s " Battle Ox " ( 1700 / 1000 ) in Attack Position . " Battle Ox " attack s and destroys Duel Machine ' s Set monster , " Cyber Jar " ( 900 / 900 ) . The Flip Effect of " Cyber Jar " then activates , destroy ing every monster on the field . and forcing both Duelists to pick up five cards from the top of their Decks and Special Summon or Set any Level 4 or below monster they find onto the field . The remaining picked up cards are added to the players ' hands . The Duel Machine Set s two monster s while Kaiba Set s a monster and Special Summon s " Maha Vailo " ( 1550 / 1400 ) , " Dark Zebra " ( 1800 / 400 ) , " Boar Soldier " ( 2000 / 500 ) , and " Hitotsu - Me Giant " ( 1200 / 1000 ) in Attack Position . Turn 3 : Duel Machine Duel Machine draws . It then Tribute s both of its Set monster s , " Aqua Madoor " ( 1200 / 2000 ) and " Wall of Illusion " ( 1000 / 1850 ) in order to Tribute Summon " Blue - Eyes White Dragon " ( 3000 / 2500 ) in Attack Position . ( NOTE : The Duel Machine could have attacked , but because it was wary of Seto ' s Set Spell / Trap Card , it chose to not attack . ) On the End Phase , the Duel Machine discards two cards from its hand as its hand surpasses the hand size limit . Turn 4 : Kaiba Kaiba draws . He then Tributes " Hitotsu - Me Giant " in order to Tribute Summon " Dragon Seeker " ( 2000 / 2100 ) in Defense Position . When this monster is switched from face - up Defense Position to Attack Position , Kaiba can destroy one Dragon - type monster on the field . He intends to use the effect of " Dragon Seeker " on the following turn . Turn 5 : Duel Machine Duel Machine draws . It then Set s a card and Normal Summon s " Lord of Dragons " ( 1200 / 1100 ) in Attack Position . Due to the effect of " Lord of D . " , it can negate any effect that target s Dragon - Type monsters . Turn 6 : Kaiba Seto switches " Maha Vailo " , " Dark Zebra " , and " Boar Soldier " to Defense Position . Turn 7 : Duel Machine Duel Machine draws . It then activate s " The Flute of Summoning Dragon " to Special Summon two " Blue - Eyes White Dragons " from its hand ( 3000 / 2500 for both ) in Attack Position . The Duel Machine then activate s its face - down " Polymerization " to fuse all three " Blue - Eyes White Dragons " together and Fusion Summon " Blue - Eyes Ultimate Dragon " ( 4500 / 3800 ) in Attack Position . Under Battle City Rules , Fusion Monsters cannot attack the same turn they are Summoned , so the Duel Machine ends its turn . ( NOTE : In the real game , this delay does not exist . ) Turn 8 : Kaiba Kaiba draws " Obelisk the Tormentor " . He then Tribute s " Boar Soldier " , " Dragon Seeker " , and his Set monster ( " D . D . Warrior " ) in order to Tribute Summon " Obelisk the Tormentor " ( 4000 / 4000 ) in Attack Position . Kaiba then activate s the first effect of " Obelisk the Tormentor " to make its ATK and DEF infinite by Tributing " Dark Zebra " and " Maha Vailo " . " Obelisk the Tormentor " attacks and destroys " Blue - Eyes Ultimate Dragon " ( Duel Machine 4000 → 0 ) . Kaiba Wins Aftermath . Everyone is shocked to see the power of Obelisk the Tormentor and it ' s raw power . Elsewhere Yugi and Tea are greeted by Mai Valentine who informs them of a new tournament coming to Domino City . They also see familiar faces return from the Duelist Kingdom Tournament , like Weevil Underwood , Rex Raptor and Mako Tsunami . Mai introduces Yugi and Tea to Espa Roba , who duels using psychic powers . Suddenly , Seto appears on every TV in the city , announcing his new Battle City Tournament , which begins in one week . And to enter , duelists must have the new Duel Disks to enter and the loser must hand over their rarest card to the winner . The holder of the Millenium Rod catches wind of this and sends his Rare Hunters to duel and win rare cards for him .