Yu - Gi - Oh ! ARC - V - Episode 129 " A Duel Within " , known as " Glimpse of the Supreme King " in the Japanese version , is the one hundred and twenty - ninth episode of the " Yu - Gi - Oh ! ARC - V " anime . It aired in Japan on October 30th , 2016 and in Canada on February 9 , 2018 . It became available with official subtitles via Crunchyroll on November 28 , 2017 . Featured Duel : Yuya Sakaki and Declan Akaba vs . Leo Akaba . Turn 4 : Yuya The effect of " Performapal Gatlinghoul " has just been activated to destroy " Spirit Tech Force - Pendulum Governor " . Due to the effect of " Spirit Reactor " , as there is an EARTH , WATER , WIND or FIRE monster on the field , each monster Leo controls cannot be destroyed once per turn . Declan controls the WIND " D / D / D Gust King Alexander " and the WATER " D / D / D Wave King Caesar " , so " Pendulum Governor " is not destroyed . Yuya Set s a card . Turn 5 : Declan Declan Tribute s " Alexander " and " Caesar " to Tribute Summon " D / D / D Doom King Armageddon " ( 3000 / 1000 ) . The effect of " Caesar " activates as it was sent to the Graveyard , allowing Declan to add 1 " Dark Contract " card from his Deck to his hand . He adds " Deceitful Dark Contract with the War Deity " and subsequently activates it . Declan activates the first effect of " Illegal Dark Contract with the War Deity " , targeting a monster he controls and one his opponent controls . He targets " Armageddon " and Leo ' s " Spirit Tech Force - Pendulum Governor " . During the Battle Phase , the ATK of his monster will increase by 1000 and the ATK of his opponent ' s monster will decreased by 1000 . " Armageddon " attacks " Pendulum Governor " ( as " Armageddon " is a Level 8 Pendulum Monster , it is not prevented from attacking by the effects of " Pendulum Governor " ) , but Leo activates his Set " Dis - Swing Fusion " , negating the attack since a Pendulum Monster is attacking and then taking control of the attacking monster , preventing it from being destroyed by card effects . The second effect of " Dis - Swing Fusion " allows Leo to ignore one of the Fusion Material s of a Fusion Monster and use monsters in his hand or on his field as the remaining Fusion Materials to Fusion Summon that Fusion Monster . Leo fuses " Pendulum Governor " to Fusion Summon " Master Spirit Tech Force - Pendulum Ruler " ( 3500 / 3000 ) . As a monster was Special Summon ed , Yuya activates his Set " Twin Big Shields " , preventing 1 monster he controls from being destroyed by battle or card effects twice per turn . He targets " Gatlinghoul " . Turn 6 : Leo Leo Pendulum Summon s " Spirit Gem - Silpheed Core " from his hand ( 0 / 0 ) and " Spirit Gem - Salamander Core " from his Extra Deck . As " Salamander Core " was Pendulum Summoned from the Extra Deck , Leo can activate its effect to return it to the hand , and he does so . Leo activates the effect of " Pendulum Ruler " , letting him Tribute a " Spirit Gem " monster that was Pendulum Summoned from the hand this turn that has not activated its effect to allow " Pendulum Ruler " to use that card ' s effect up to twice this turn and double any effect damage inflicted by this effect . He Tributes " Silpheed Core " . He activates the effect now , letting him destroy a Spell / Trap Card on the field and inflict damage 800 to its controller . He destroys " Twin Big Shields " ( Yuya : 3200 → 1600 ) and " Deceitful Dark Contract with the War Deity " ( Declan : 3200 → 1600 ) . " Pendulum Ruler " attacks and destroys " Gatlinghoul " . ( Yuya : 1600 → 1000 ) " Armageddon " attacks directly , but Yuya finds and activates the Action Card " Evasion " , negating the attack . Turn 7 : Yuya Yuya Pendulum Summons " Odd - Eyes Pendulum Dragon " ( 2500 / 2000 ) and " Performapal U Go Golem " ( 1600 / 1000 ) from his Extra Deck and " Performapal Nightmare Knight " ( 1700 / 0 ) from his hand . Yuya overlays the Level 4 " U Go Golem " and " Nightmare Knight " to Xyz Summon " Dark Rebellion Xyz Dragon " ( 2500 / 2000 ) . Yuya activates " The Phantom Knights of Possession " , letting him treat an Xyz Monster he controls as having a Level equal to the Level of a monster on the field . He treats " Dark Rebellion " as having the same Level as " Odd - Eyes " . Yuya overlay s his two Level 7 Dragon - Type monsters to Xyz Summon " Odd - Eyes Raging Dragon " ( 3000 / 2500 ) in Attack Position . Yuya activates the effect of " Raging Dragon " , detach ing all of its Overlay Units to negate the effects of as many face - up Spell / Trap Cards as possible and then destroying all other cards on the field , with " Raging Dragon " gaining 200 ATK for each destroyed card . He destroys both " Spirit Reactors " , " Stargazer Magician " , " Timegazer Magician " , " D / D Cerberus " , " D / D Savant Copernicus " and " Dark Contract with Exclusivity " . The effect of " Pendulum Ruler " prevents itself from being destroyed . As he destroyed 7 cards , " Raging Dragon " gains 1400 ATK ( " Raging Dragon " : 3000 → 4400 ) " Raging Dragon " attacks and destroys " Armageddon " . As Leo would take battle damage involving " Armageddon " , it will be inflicted to Declan as per as the effect of " Dis - Swing Fusion " ( Declan : 1600 → 200 ) . " Raging Dragon " attacks and destroys " Pendulum Ruler " ( Leo : 1600 → 700 ) Yuya activates the effect of " Performapal Nightmare Knight " , banishing it from his Graveyard to inflict 1000 damage to all players who took battle damage this turn . At this point , Yusho enters the Duel and takes the intrusion penalty ( Yusho : 4000 → 2000 LP ) . By sending all cards in his hand to the Graveyard , Yusho activates " Restraining Sword of Impact " and ends the Battle Phase . Since " Restraining Sword of Impact " was an illegal card , the Duel gets canceled . Featured cards . The following cards appeared in this episode . Cards in italics debuted here .