Yu - Gi - Oh ! - Episode 115 " Brothers in Arms , Part 2 " , known as " Invincible Deck Master - Miraculous Ark " in the Japanese version , is the one hundred and fifteenth episode of the " Yu - Gi - Oh ! " anime . It first aired in Japan on July 23 , 2002 and in the United States on February 14 , 2004 . Featured Duel : Seto Kaiba vs . Noah Kaiba , Part 2 . " Duel continues from previous episode . " Seto has 1400 Life Points remaining and controls no cards . Noah has 3200 Life Points remaining and controls no cards . Turn 6 : Noah After revealing his Deck Master to be " Shinato ' s Ark " , Noah activates the Deck Master ability of " Shinato ' s Ark " to add all the monsters that are currently in the Graveyard into itself . Turn 7 : Seto Seto ' s hand contains " Dragon ' s Rage " , " Ring of Destruction " , " Ring of Defense " , and " Quick Attack " . Seto draws " Spear Dragon " and subsequently Normal Summons it ( 1900 / 0 ) in Attack Position . " Spear Dragon " attacks directly , but Noah activates his Deck Master ' s ability to Special Summon " Vampire Lord " ( 2000 / 1500 ) to his side of the field in Defense Position and have it intercept the attack . " Spear Dragon " destroys " Vampire Lord " and inflicts piercing damage to Noah ( Noah 3200 → 2800 ) . " Vampire Lord " returns into Noah ' s " Shinato ' s Ark " . Since " Spear Dragon " attacked , its secondary effect switches it to Defense Position at the end of the Damage Step . Turn 8 : Noah Noah draws . He then Normal Summons " Giant Rex " ( 2000 / 1200 ) in Attack Position . " Giant Rex " attacks and destroys " Spear Dragon " . " Spear Dragon " goes into Noah ' s " Shinato ' s Ark " . Turn 9 : Seto Seto draws " Pot of Greed " and subsequently activates it to draw two cards . Seto then activates the Deck Master Ability of " Kaiser Sea Horse " to allow himself to summon a LIGHT monster in his hand with one less tribute this turn . Seto Normal Summons " Different Dimension Dragon " ( 1400 / 1500 ) in Defense Position and sets three cards . Turn 10 : Noah Noah draws " Deepest Impact " and subsequently activates it to destroy all monsters on the field and halve both players ' Life Points ( Noah 2800 → 1400 ; Seto 1400 → 700 ) . " Giant Rex " goes into Noah ' s " Shinato ' s Ark " . Since " Different Dimension Dragon " cannot be destroyed by the effects of Magic or Trap Card s that don ' t have a specific target , it remains on the field . Noah then activates " Ice Age Panic " to Special Summon " Last Tusk Mammoth " ( 800 / 1200 ) in Attack Position . " Last Tusk Mammoth " attacks " Different Dimension Dragon " . Noah explains to Seto that when " Last Tusk Mammoth " battles a monster , all Battle Damage that Noah would take will be inflicted to Seto instead . Seto then activates his face - down " Ring of Destruction " to destroy " Last Tusk Mammoth " and inflict its ATK as damage to both players . Seto then activates his face - down " Ring of Defense " to prevent himself from taking the damage inflicted by the effect of " Ring of Destruction " ( Noah 1400 → 600 ) . Turn 11 : Seto Seto draws . He then switches " Different Dimension Dragon " to Attack Position . Seto then discards " Thunder Dragon " from his hand via its own effect in order to add two " Thunder Dragons " from his Deck to his hand . The discarded " Thunder Dragon " goes into " Shinato ' s Ark " . Seto then activates " Polymerization " to fuse his two " Thunder Dragons " together and Fusion Summon " Twin - Headed Thunder Dragon " ( 2800 / 2100 ) in Attack Position . The two " Thunder Dragons " that were just used go into Noah ' s " Shinato ' s Ark " . Seto then activates " Quick Attack " to allow " Twin - Headed Thunder Dragon " to attack this turn ( NOTE : In real life this is not necessary , but this Duel follows the Battle City Rules ) . Noah activates the Deck Master Ability of " Shinato ' s Ark " to Special Summon " Giant Soldier of Stone " ( 1300 / 2000 ) and " Giant Rex " ( 2000 / 1200 ) in Defense Position . Seto then activates his face - down " Dragon ' s Rage " to allow his Dragon - Type monsters to inflict piercing damage this turn . " Different Dimension Dragon " attacks and destroys " Giant Rex " . " Different Dimension Dragon " then inflicts piercing damage to Noah ( Noah 600 → 400 ) . " Giant Rex " goes back into " Shinato ' s Ark " . Seto is about to use " Twin - Headed Thunder Dragon " to attack " Giant Soldier of Stone " , but Noah uses a brain - washed Mokuba as a shield to protect himself . Seto has to choose whether to continue his attack and hurt Mokuba , or stop the attack and possibly lose the Duel and control of Kaiba Corporation . " Duel concludes next episode . " Featured cards . The following cards appeared in this episode . Cards in italics debuted here .