Yu - Gi - Oh ! 5D ' s - Episode 066 " A New Threat , Part 2 " , known as " Proof of Evolution , Synchro Monster " in the Japanese version , is the sixty sixth episode of Yu - Gi - Oh ! 5D ' s . It first aired in Japan on July 8 , 2009 and in the United Sates on September 25 , 2010 Summary . Yusei ' s base . As the sun rises in New Domino City , Leo and Luna dash through a medieval - style town to a building called Poppo Time . They shout Yusei ' s name , but notice he is not around . Instead , they find Akiza standing over a desk . Although neither her nor Luna are getting a reaction from their Marks of the Dragon , Akiza has the feeling that Yusei is dueling someone right now . The Duel . Yusei continues his Duel with Ghost , while Crow and Jack watch from adjacent lanes . Crow and Jack meet up and notice Yusei is facing a large monster but then see it is 5 smaller ones . Regardless , they believe Yusei should be able to win . Yusei Set s 2 cards in his Spell & Trap Card Zone and ends his turn . Ghost begins his turn , raising both duelists ' SPC to 2 . He has " Machine Emperor Wisel ∞ " attack " Max Warrior " , but Yusei activates " Shock Reborn " , to halve the Battle Damage . " Max Warrior " gets destroyed and Yusei ' s Life Points drop to 3150 . Using the other effect of " Shock Reborn " , Yusei revives " Turbo Booster " . Ghost sets 1 card face - down into his Spell & Trap Card Zone and ends his turn snickering . Yusei begins his turn and both duelists ' SPC increase to 3 . Yusei starts to think about the effect of " Machine Emperor Wisel ∞ " . Considering his options , he looks at his cards on his field ; " Turbo Booster " and a face - down Spell or Trap Card and the cards in his hand ; " Gauntlet Warrior " , " Speed Spell - Angel Baton " and " Debris Dragon " , and devises a way to Summon " Stardust Dragon " and combine it with " Meteor Wave " . He activates " Speed Spell - Angel Baton " , sending " Gauntlet Warrior " to the Graveyard to draw 2 cards . Next , he Summons " Debris Dragon " and uses its effect to revive " Gauntlet Warrior " . By tuning " Turbo Booster " , " Gauntlet Warrior " and " Debris Dragon " , he Synchro Summon s " Stardust Dragon " . Yusei then activates his face - down " Meteor Wave " , raising the ATK of " Stardust Dragon " , making it higher than the ATK of " Machine Emperor Wisel ∞ " . He has it attack " Machine Emperor Wisel ∞ " , but Ghost activates the effect of " Wisel Guard " making it the attack target . The arm of " Machine Emperor Wisel ∞ " takes the hit and gets blown off , but , due to " Meteor Wave ' s " second effect , since the monster affected by it had attacked a monster in Defense Position , Ghost receives Piercing damage . Ghost ' s Life Points drop to 2400 , while Yusei Sets a card in his Spell & Trap Card Zone and ends his turn . Ghost looks up Yusei ' s data on the monitor of his Duel Runner . He sees that Yusei defeated Rex Goodwin and laughs that Yusei is still clueless . Ghost begins his turn and each duelists ' SPC increase to 4 . He Summons " Wisel Guard 3 " , which replaces the missing arm of " Machine Emperor Wisel ∞ " . Ghost laughs that " Wisel " is invincible , but Yusei thinks he should be able to beat if he can take out all the components at once . Yusei asks Ghost why he is targeting Duel Runners , and Ghost replies that it is his purpose . He claims to be the Synchro killer and uses the effect of " Machine Emperor Wisel ∞ " effect to equip itself with " Stardust Dragon " . " Machine Emperor Wisel ∞ " fires a number of energy beams , which strap themselves to " Stardust Dragon " . " Stardust Dragon " begins to struggle but is sucked into the machine . Yusei then remembers Trudge warning him not to use Synchros against Ghost . The ATK of " Machine Emperor Wisel ∞ " rises to 5000 . " Meklord Emperor Wisel " attacks Yusei directly , but Yusei uses " Scrap - Iron Scarecrow " to negate the attack . Ghost Sets 2 cards in his Spell & Trap Card Zone and ends his turn . Yusei begins his turn and both duelists ' SPC rises to 5 . Yusei Summons " Bicular " in Defense Mode and Sets 1 card in the Spell & Trap Card Zone , before ending his turn . Both duelists ' SPC increase to 6 and Ghost activates " Wise A3 " , Special Summon ing " Wisel Attack 3 " . It folds out into an arm an attaches itself to " Machine Emperor Wisel ∞ " , raising its ATK to 5400 . " Machine Emperor Wisel ∞ " attacks " Bicular " . Yusei plays " Scrap - Iron Scarecrow " again . However , Ghost activates his face - down , " Battle Return " , lowering the ATK of " Machine Emperor Wisel ∞ " to 2700 , so it may attack again . It attacks and takes out " Bicular " , causing Yusei to struggle to maintain control of his Duel Runner . " Machine Emperor Wisel ∞ " then inflicts damage to Yusei equal to the ATK of " Stardust Dragon " , dropping his Life Points to 650 . Using the effect of " Bicular " , Yusei Special Summons " Unicycular " . Ghost activates " Trap Recycle " , returning " Battle Return " to his hand , alongside " Reload " and ends his turn . Jack yells at Yusei to fight back . Yusei begins his turn , drawing " Sonic Chick " and both duelists ' SPC increase to 7 . Yusei uses the effect of " Speed World 2 " to remove his 7 Speed Counter s to draw a card . Yusei concentrates and his Mark of the Dragon starts to glow . Crow and Jack notice theirs glowing too . Back in Poppo Time , Akiza and Luna ' s have started glowing too . The birthmarks all disappear and form the complete dragon on Yusei ' s back . The top card on Yusei ' s Deck starts to glow . He dramatically draws the card , " Majestic Dragon " and Summons it . Yusei then activates " Synchro Material " returning " Stardust Dragon " to his side of the field . Tuning " Majestic Dragon " with " Stardust Dragon " and " Unicycular " , Yusei Synchro Summons " Majestic Star Dragon " . " Majestic Star Dragon " , which has 3800 ATK , attacks " Wisel Top " , which has 500 ATK . " Wisel Top " gets destroyed decapitating " Meklord Emperor Wisel " , which subsequently gets destroyed . Ghost ' s Life Points drop to 0 and his Duel Runner strays off course , plummeting off the bridge and exploding . Aftermath . Down below in the woodland area , where Ghost crashed , Primo walks over to the charred Duel Runner . He removes a part from the Duel Runner , containing the Deck and looks up at " Majestic Star Dragon " , believing Yusei to be responsible . After Primo has left , Yusei , Jack and Crow arrive at the scene . Crow touches Ghost , then jumps back in alarm as his robotic arm falls off . Yusei deduces that Ghost is just a robot . Back at the base , Trudge , who has recovered from his encounter with Ghost , Mina , Luna , Leo , Akiza , Jack , Yusei and Crow gather around a table inspecting photos Trudge tells them that Ghost was a Duelbot . As they wonder who is behind the Duelbots , Yusei gives Trudge a chip from his Duel Runner , saying it was programmed to erase all its data when it lost . Trudge is surprised Yusei can access the CPU so easily , then Crow says it was easy for Yusei and he is better than Security . As they ponder on recent happenings , Yusei thinks to himself that they are about to face a new threat . Featured Duel : Yusei Fudo vs . Ghost . Turn 2 : Yusei Ghost has just managed to summon his " Machine Emperor Wisel ∞ " and its separate parts . Yusei sets two cards . Turn 3 : Ghost Ghost draws " Trap Recycle " . During the Standby Phase , the effect of " Speed World 2 " activates ( Ghost ' s SPC : 1 → 2 , Yusei ' s SPC : 1 → 2 ) . " Machine Emperor Wisel ∞ " attacks and destroys " Max Warrior " , but Yusei activates his face - down " Shock Reborn " to halve the Battle Damage he takes ( Yusei 4000 → 3150 ) and Special Summon " Turbo Booster " ( 1 / 0 / 0 ) from his Graveyard in Attack Position . Ghost ' s hand contains " Wisel Attack 3 " , " Wisel Guard 3 " , " Wisel Carrier " , and " Battle Return " . Ghost sets a card . Turn 4 : Yusei Yusei draws . During the Standby Phase , the effect of " Speed World 2 " activates ( Ghost ' s SPC : 2 → 3 , Yusei ' s SPC : 2 → 3 ) . Yusei ' s hand contains " Gauntlet Warrior " , " Speed Spell - Angel Baton " , and " Debris Dragon " . Yusei activates " Speed Spell - Angel Baton " to draw two cards and send " Gauntlet Warrior " from his hand to the Graveyard . Yusei then Normal Summons " Debris Dragon " ( 4 / 1000 / 2000 ) in Attack Position . He then activates the effect of " Debris Dragon " to Special Summon " Gauntlet Warrior " ( 3 / 400 / 1600 ) from his Graveyard in Attack Position . Yusei then tunes " Turbo Booster " and " Gauntlet Warrior " with " Debris Dragon " in order to Synchro Summon " Stardust Dragon " ( 8 / 2500 / 2000 ) in Attack Position . Yusei then activates his face - down " Meteor Wave " to increase the ATK of " Stardust Dragon " by 300 as well as grant it the ability to inflict piercing damage ( " Stardust Dragon " : 2500 → 2800 / 2000 ) . " Stardust Dragon " then attacks " Machine Emperor Wisel ∞ " , but Ghost activates the effect of " Wisel Guard " to redirect the attack to " Wisel Guard " , destroying it . " Stardust Dragon " then inflicts piercing damage to Ghost ( Ghost 4000 → 2400 ) . Yusei sets a card ( " Scrap - Iron Scarecrow " ) . On Yusei ' s End Phase , the effect of " Meteor Wave " expires ( " Stardust Dragon " : 2800 → 2500 / 2000 ) . Turn 5 : Ghost Ghost draws . During the Standby Phase , the effect of " Speed World 2 " activates ( Ghost ' s SPC : 3 → 4 , Yusei ' s SPC : 3 → 4 ) . Ghost then Normal Summons " Wisel Guard 3 " ( 3 / 0 / 2000 ) in Defense Position . Now whenever Yusei attacks a monster Ghost controls , Ghost can change the attack target to " Wisel Guard 3 " . Also " Wisel Guard 3 " can ' t be destroyed by battle once per turn . Ghost then activates the effect of " Machine Emperor Wisel ∞ " , equip ping itself with " Stardust Dragon " and increasing its ATK by the ATK of " Stardust Dragon " ( " Meklord Emperor Wisel Infinity " : 2500 → 5000 / 0 ) . Yusei ' s hand contains " Synchro Material " . " Machine Emperor Wisel Infinity " attacks directly , but Yusei activates his face - down " Scrap - Iron Scarecrow " to negate the attack . After that resolves , " Scrap - Iron Scarecrow " resets itself face - down . Ghost ' s hand contains " Wisel Attack 3 " , " Battle Return " , " Wise A3 " , and " Reload " . Ghost sets two cards . Turn 6 : Yusei Yusei draws " Bicular " . During the Standby Phase , the effect of " Speed World 2 " activates ( Ghost ' s SPC : 4 → 5 , Yusei ' s SPC : 4 → 5 ) . Yusei Normal Summons " Bicular " ( 2 / 200 / 200 ) in Defense Position and sets a card . Turn 7 : Ghost Ghost draws . During the Standby Phase , the effect of " Speed World 2 " activates ( Ghost ' s SPC : 5 → 6 , Yusei ' s SPC : 5 → 6 ) . Ghost activates his face - down " Wise A3 " to send " Wisel Attack " to the Graveyard ( " Machine Emperor Wisel ∞ " : 5000 → 3800 / 0 ) and Special Summon " Wisel Attack 3 " ( 3 / 1600 / 0 ) in Attack Position ( " Machine Emperor Wisel ∞ " : 3800 → 5400 / 0 ) . Due to the effect of " Wisel Attack 3 " , " Machine Emperor Wisel ∞ " is granted the ability to inflict piercing damage . " Machine Emperor Wisel ∞ " attacks " Bicular " , but Yusei activates his face - down " Scrap - Iron Scarecrow " negate the attack . After that resolves , " Scrap - Iron Scarecrow " resets itself face - down . Ghost then activates his face - down " Battle Return " to halve the ATK of " Machine Emperor Wisel ∞ " ( " Machine Emperor Wisel ∞ " : 5400 → 2700 / 0 ) in order to allow " Machine Emperor Wisel ∞ " to attack again . Ghost ' s hand contains " Slip Summon " and " Reload " . " Machine Emperor Wisel ∞ " then attacks and destroys " Bicular " . " Machine Emperor Wisel ∞ " then inflicts piercing damage to Yusei ( Yusei 3150 → 650 ) . Yusei then activates the effect of " Bicular " to Special Summon " Unicycular " ( 1 / 100 / 100 ) in Attack Position . At the end of the Battle Phase , the effect of " Battle Return " expires ( " Machine Emperor Wisel ∞ " : 2700 → 5400 / 0 ) . Ghost activates his face - down " Trap Recycle " to send " Slip Summon " from his hand to the Graveyard and add " Battle Return " from his Graveyard to his Hand , however Ghost is forbidden from setting " Battle Return " face - down this turn . Ghost ' s hand contains " Reload " and " Battle Return " . Turn 8 : Yusei Yusei draws " Sonic Chick " . During the Standby Phase , the effect of " Speed World 2 " activates ( Ghost ' s SPC : 6 → 7 , Yusei ' s SPC : 6 → 7 ) . Yusei then activates the effect of " Speed World 2 " to remove seven Speed Counters ( Yusei ' s SPC : 7 → 0 ) and draw one card ( " Majestic Dragon " ) . Yusei then Normal Summons " Majestic Dragon " ( 1 / 0 / 0 ) in Attack Position . Yusei then activates his face - down " Synchro Material " to allow himself to use " Stardust Dragon " as a Synchro Material Monster for a Synchro Summon this turn . Yusei then tunes " Stardust Dragon " and Unicycular " with " Majestic Dragon " in order to Synchro Summon " Majestic Star Dragon " ( 10 / 3800 / 3000 ) in Attack Position . ( " Machine Emperor Wisel ∞ " : 5400 → 2900 / 0 ) . Yusei then activates the effect of " Majestic Star Dragon " to negate the effects of " Wisel Guard 3 " and grant them to " Majestic Star Dragon " until the End Phase . " Majestic Star Dragon " attacks and destroys " Wisel Top " ( Ghost 2400 → 0 ) . Tenth anniversary tribute . The first 15 seconds of this episode features Jaden and his most famous cards ( " Elemental HERO Neos " , " Elemental HERO Bubbleman " , " Elemental HERO Wildheart " , " Winged Kuriboh " , " Elemental Hero Burstinatrix " , " Elemental HERO Avian " , " Elemental HERO Flame Wingman " , " Elemental HERO Clayman " , " Elemental HERO Sparkman " , " Elemental HERO Thunder Giant " , and " Card Ejector " ) . Featured cards . Cards in italics made their debut in this episode .