Yu - Gi - Oh ! - Episode 012 " Trial by Red Eyes " , known as " Black Flames ! Red - Eyes Black Dragon " in the Japanese version , is the twelfth episode of the " Yu - Gi - Oh ! " second series anime . It first aired in Japan on July 4 , 2000 and in the United States on January 19 , 2002 . Summary . The Duel between Joey and Rex continues , with Joey ' s Battleguards dominating the field . However it turned out the " Serpent Night Dragon " that he destroyed with his Battleguards wasn ' t Rex ' s best card after all as he summons the mighty " Red - Eyes Black Dragon " and destroys both of Joey ' s Battleguards . Joey was worried and he tried to stay calm Téa ask Yugi if there was anyway Joey could stop the dragon he did know a way but he couldn ' t tell him about , when all seemed lost to Joey his friend tell him that dueling is more about heart the strength , meanwhile Rex remembered that Joey ' s Time Wizard still on the field while Mai continues to rant at Rex about his dueling skills and decides that if he can take Joey ' s " Time Wizard " , it will be the perfect weapon to shut her up for good . Rex says he ' ll up the ante , with both players wagering the card they have on the field : if Rex wins , he gets Joey ' s " Time Wizard " , but if Joey wins , he gets Rex ' s " Red - Eyes Black Dragon " . Joey knows that if he wins " Red - Eyes Black Dragon " , it will help him a lot , but he hesitates a bit to risk the card Yugi gave him . Then he realizes that this card gives him a strong shot at winning , and he accepts the bet . He then Flip Summon s " Time Wizard " , wiping the smile off of Rex ' s face , and casts its effect . If the effect fails , his monster will self - destruct and take out the few Life Points Joey has left . But by sheer luck , the " Time Wizard ' s " roulette lands on a Time Machine , which ages " Red - Eyes Black Dragon " into a fossil and collapses it into dust . Rex ' s Life Points decrease to 0 , and Joey wins the Duel and a new ace monster . Joey ' s friends are all jubilant at the outcome ( though Joey and Tristan get into a fight when Tristan returns the punch from before the Duel ) . When nighttime falls , the gang decides to set up camp . However , they are all very hungry and exhausted from the day ' s trials . Just then , Mai appears with a sack full of food . She agrees to share with them , but only if they are willing to cook and set up the camp , she wanted Yugi to get some firewood and Joey and Tristan would go get water . Mai then tells Téa that if she wanted to freshen up there was a shower nearby . Later as Téa is getting undressed in the camp shower the two women get into a conversation while the boys cook , Mai wonders why Téa is always with the boys and she replies back by saying that they are her best friends , Mai still doesn ' t understand . Suddenly Téa hears a sound from out side and she scream , Mai rushes in the shower to see what was wrong Téa tells her what happened and she goes to look out side but nothing was there . The others , but it doesn ' t work . Later , everyone digs in and eats . Frustrated , Mai walks away towards a cliff and is kidnapped by a huge dark man . Back at the campfire , Bakura appears , and they welcome him to sit down . They all start talking about Duel Monsters . All five of them then show what their favorite cards are ( which are " Flame Swordsman " ( Joey ) , " Dark Magician " ( Yugi ) , " Cyber Commander " ( Tristan ) , " Magician of Faith " ( Téa ) , and " Change of Heart " ( Bakura ) ) , and Bakura decides he wants a duel with Yugi , not for Star Chip s but for fun . He tells them each person should put their favorite card in Yugi ' s Deck . Before the Duel begins , he reveals that he has the Millennium Ring . His eyes narrow as he becomes Yami Bakura and uses the Ring to transport them into the Shadow Realm , locking their souls into the favorite cards . As he reaches for Yugi ' s Millennium Puzzle , Yami Yugi appears and says that if he wants his Puzzle , he has to Duel him for it , but if Yugi wins , Bakura must restore the souls of his friends . Bakura accepts , but warns Yugi that this is one game he will not win . Featured Duel : Joey Wheeler vs . Rex Raptor . Joey has 1595 LP remaining and control s " Swamp Battleguard " ( 1800 → 2840 / 1500 → 2450 ) and " Lava Battleguard " ( 1550 → 2515 / 1800 → 2840 ) , both in Attack Position , and 1 Set card ( " Time Wizard " ) . Rex has 840 LP remaining and control s no monsters or Set cards . Turn 18 : Rex Rex Sets a monster . Turn 19 : Joey " Lava Battleguard " attacks and destroys Rex ' s Set " Trakodon " ( 1300 → 1690 / 800 → 1040 ) . Turn 20 : Rex Rex draws " Red - Eyes Black Dragon " and subsequently Normal Summons it ( 2400 / 2000 ) in Attack Position . He then activate s " Dragon Nails " , equipping it to " Red - Eyes Black Dragon " and increasing its ATK by 600 ( " Red - Eyes Black Dragon " : 2400 → 3000 / 2000 ) . " Red - Eyes " attacks and destroys " Swamp Battleguard " and " Lava Battleguard " ( Joey 1595 → 235 ) . At this point , Rex and Joey agree to ante up all of the cards on the field . Turn 21 : Joey Joey draws . He then Flip Summon s " Time Wizard " ( 500 / 400 ) in Attack Position . Joey then activates the effect of " Time Wizard " and succeeds , so its effect destroys " Red - Eyes Black Dragon " and inflicts damage to Rex equal to half the ATK of " Red - Eyes Black Dragon " ( Rex 840 → 0 ) . ( NOTE : In the real game , the Duel would continue , but according to the tournament rules , when a monster is destroyed by a card effect , the controller of that card will receive damage equal to half of that monster ' s ATK . ) Aftermath . Joey receives " Red - Eyes Black Dragon " and " Dragon Nails " from Rex as per their bet . Featured cards . The following cards appeared in this episode . Cards in italics debuted here .