Yu - Gi - Oh ! - Episode 079 " Shadow of a Duel " , known as " Ghost Deck vs . Occult Deck " in the Japanese version , is the seventy - ninth episode of the " Yu - Gi - Oh ! " anime . It first aired in Japan on October 30 , 2001 , and in the United States on August 16 , 2003 . Summary . After Marik ' s attempt to defeat Yugi and the Pharaoh by using his Millennium Rod to control his friends backfired , he sets his sights on defeating the Pharaoh at the Battle City Finals . Within Bakura ' s mind , Marik convinces Yami Bakura to also enter the Battle City Finals . Yami Bakura takes over his vessel , the good Bakura ' s body , steals a Duel Disk and Locator Card from a random duelist and heads to a graveyard , following a rumor there are Duel s being held there . Because Yami Bakura disliked the deck that the random duelist had and threw the cards back to him , it is unknown how he got his ghostly deck , although stealing it from another random duelist is the main possibility . There is also the possibility that when Yami Bakura and Marik first met and made their deal , Yami Bakura created a deck before injuring himself and kept it in his pocket , since Marik asked him how good his Dueling skills were while making their deal . He finds Bonz , Sid and Zygor dressed in Halloween costumes , terrorizing random duelists in order to obtain Locator Cards without even dueling . Even though they ' d already obtained five Locator Cards this way , Yami Bakura is not impressed and challenges Bonz to a duel in the Shadow Realm . Not knowing any better , Bonz accepts . Meanwhile , Yugi and Joey Wheeler have both qualified for entry into the Battle City Finals . By putting the Locator Cards on the Duel Disk ( 5 in the Monster Card Zone s and the last in the Field Spell Zone ) they receive instructions to go to an old stadium which would be the location of the Finals . . . but is it really ? Featured Duel : Yami Bakura vs . Bonz . Turn 1 : Yami Bakura Yami Bakura draws " Headless Knight " and subsequently Normal Summons it ( 1450 / 1700 ) in Attack Position . He then Set s a card . Turn 2 : Bonz Bonz draws " The Snake Hair " and subsequently Normal Summons it ( 1500 / 1200 ) in Attack Position . " Snake Hair " attack s and destroy s " Headless Knight " ( Yami Bakura 4000 → 3950 ) . Turn 3 : Yami Bakura Yami Bakura draws . He then activate s his face - down " The Shallow Grave " to allow both players to Special Summon a monster from each Graveyard in Defense Position . Yami Bakura Special Summons " Headless Knight " ( 1450 / 1700 ) in Defense Position , but Bonz Special Summons nothing as his Graveyard is currently empty . Turn 4 : Bonz Bonz draws " Dragon Zombie " and subsequently Normal Summons it ( 1600 / 0 ) in Attack Position . He then activates " Magic Burial " to pay 800 Life Points ( Bonz 3500 → 2700 ) and revive " The Snake Hair " ( 1500 / 1200 ) in Attack Position . Bonz ' s hand , at this point , contains " Armored Zombie " , " Polymerization " , " Skull Invitation " , and " Crass Clown " . Bonz then activates " Polymerization " to fuse " Dragon Zombie " with " The Snake Hair " and Fusion Summon " Great Mammoth of Goldfine " ( 2200 / 1800 ) in Attack Position . Under Battle City Rules , Fusion Monsters cannot attack during the same turn they are Fusion Summoned . Bonz Sets a card . He intends to use his set card once " Great Mammoth of Goldfine " attacks and destroys " The Earl of Demise " . Turn 5 : Yami Bakura Yami Bakura draws . Bonz activates his face - down " Skull Invitation " . Now whenever a card ( s ) goes to the Graveyard , the owner of that card ( s ) will automatically take 300 damage per card . Yami Bakura then activates " Spiritualistic Medium " to discard his entire hand and increase the ATK of " The Earl of Demise " by 500 for each card discarded . There were four discarded ( " Earl of Demise " : 2000 → 4000 / 700 ) . The effect of " Skull Invitation " then activates ( Yami Bakura 3950 → 2750 ) . " The Earl of Demise " attacks and destroys " Great Mammoth of Goldfine " ( Bonz 2700 → 900 ) . The effect of " Skull Invitation " then activates ( Bonz 900 → 600 ) . At the End Phase , the effect of " Spiritualistic Medium " expires ( " The Earl of Demise " : 4000 → 2000 / 700 ) . Turn 6 : Bonz Bonz draws " Nightmare ' s Steelcage " and subsequently activates it . Now no monsters can attack for two turns . Bonz then Sets a card . Turn 7 : Yami Bakura Yami Bakura draws " Ectoplasmer " and subsequently activates it . Now both players , during each of their turns , can choose up to two types of monsters to be converted into ectoplasm , with half of the turn player ' s Tributed monsters ' ATK being inflicted as damage to their opponents . Yami Bakura activates the effect of " Ectoplasmer " and selects " Fiend " for its effect , which causes " The Earl of Demise " to be Tributed ( Bonz 600 → 0 ) . Featured cards . The following cards appeared in this episode . Cards in italics debuted here .