Yu - Gi - Oh ! - Episode 030 " Duel Identity , Part 2 " , known as " The Super Legendary Warrior - Chaos Soldier Descends " in the Japanese version , is the thirtieth episode of the " Yu - Gi - Oh ! " second series anime . It first aired in Japan on November 14 , 2000 and in the United States on August 31 , 2002 . Summary . The Duel between Mai Valentine and Yugi Muto continues . Yugi is down to 300 Life Points while Mai still has all of hers . Yugi and Yami Yugi continue to struggle internally . Mai then explains that after losing her Duel with Joey , it made her realize that the reason why she cheated in her Duels was because she was afraid of losing and of trusting herself . She also says a Duelist can learn more from a defeat than from a victory . After the conversation with both Mai and Yami Yugi , Yugi realizes he has to face his fear as well , and finally lets Yami Yugi Duel without holding him back . Yugi uses " Brain Control " to take control of " Harpie ' s Pet Dragon " . He then Tribute s " Harpie ' s Pet Dragon " for the effect of " Catapult Turtle " . This not only subtracts half of the dragon ' s ATK from Mai ' s Life Points , but it also destroy s Mai ' s " Mirror Wall " . Yugi also realizes that " Shadow of Eyes " cannot affect female monster s , so he Summon s " Mystical Elf " in Defense Position . However , Mai uses " Monster Reborn " to revive " Harpie ' s Pet Dragon " and uses her " Harpie Lady Sisters " to destroy " Mystical Elf " , wiping out his defense . Yugi draws " Swords of Revealing Light " and activate s it , preventing Mai from attack ing for three turn s . During those turns , Yugi Summons " Kuriboh " and " Gaia The Fierce Knight " . On the final turn , Yugi draws " Black Luster Ritual " ( Pegasus senses a sudden surge of power when this happens ) and uses it to Tribute his monsters and Ritual Summon " Black Luster Soldier " , which destroys " Harpie ' s Pet Dragon " . Losing her most powerful monster and not willing to watch her " Harpie Lady Sisters " be destroyed , Mai surrender s and that wins Yugi the Duel by default . Featured Duel : Yami Yugi vs . Mai Valentine . Yugi has 300 LP remaining and control s no cards . Mai has 2000 LP remaining and controls " Harpie ' s Pet Dragon " ( 2300 / 2800 ) and " Harpie Lady " ( 2100 / 2200 ) both in Attack Position , the latter equip ped with " Cyber Shield " and " Rose Whip " , as well as " Mirror Wall " and " Shadow of Eyes " and no Set cards . Turn 12 : Yami Yugi After a conversation with Mai , Yugi is finally convinced to Duel seriously ( let Yami Yugi Duel in the dub ) . Yugi draws " Brain Control " and subsequently activate s it to take control of " Harpie ' s Pet Dragon " . Yugi then Sets a card and Normal Summon s " Catapult Turtle " ( 1000 / 2000 ) in Attack Position . Yugi then activates the effect of " Catapult Turtle " to Tribute " Harpie ' s Pet Dragon " , destroy " Mirror Wall " , and inflict damage to Mai equal to half the ATK of " Harpie ' s Pet Dragon " on the field ( Mai : 2000 → 850 LP ) . Turn 13 : Mai Mai draws . She then activates " Elegant Egotist " to turn one " Harpie Lady " into three " Harpie Ladies " in Attack Position ( 2450 / 2100 for newly summoned " Harpies " ) . Mai decides not to attack as she believes Yugi ' s Set card is a Trap Card . Turn 14 : Yami Yugi Yugi reveals his bluff by activating his face - down " Monster Recovery " , which returns " Catapult Turtle " and his hand to his Deck and allow Yugi to draw five new cards . Yugi draws " Celtic Guardian " , " Monster Reborn " , " Griffore " , " Kuriboh " , and " Mystical Elf " . Yugi Normal Summons " Mystical Elf " ( 800 / 2000 ) in Defense Position . This monster is unaffected by the effect of " Shadow of Eyes " since it is a female monster . Turn 15 : Mai Mai activates " Monster Reborn " to Special Summon " Harpie ' s Pet Dragon " ( 2000 / 2500 ) from her Graveyard in Attack Position . Due to the effect of " Harpie ' s Pet Dragon " , it gains 300 ATK and DEF for every " Harpie Lady " on the field , and there are three ( " Harpie ' s Pet Dragon " : 2000 → 2900 / 2500 → 3400 ) . " Harpie Lady Sisters " attack and destroy " Mystical Elf " . Turn 16 : Yami Yugi Yugi draws " Swords of Revealing Light " and subsequently activates it . Mai ' s monsters can not attack for three turn s and all of her monsters must be face - up . Yugi then Normal Summons " Kuriboh " ( 300 / 200 ) in Attack Position . Turn 17 : Mai Mai draws , then passes her turn . Due to the effect of " Swords of Revealing Light " , Mai cannot attack for two more turns . Turn 18 : Yami Yugi Yugi ' s hand contains " Celtic Guardian " , " Monster Reborn " and " Griffore " . Yugi draws " Polymerization " . He then activates " Monster Reborn " to Special Summon " Gaia The Fierce Knight " ( 2300 / 2100 ) from his Graveyard in Attack Position . Turn 19 : Mai Mai draws , then passes her turn . Due to the effect of " Swords of Revealing Light " , Mai cannot attack for one more turn . Turn 20 : Yami Yugi Yugi draws " Winged Dragon , Guardian of the Fortress " . He passes his turn . Turn 21 : Mai Mai draws " Harpie Lady " . She passes her turn . The effect of " Swords of Revealing Light " expires . Turn 22 : Yami Yugi Yugi draws " Black Luster Ritual " and subsequently activates it to Tribute " Gaia The Fierce Knight " and " Kuriboh " and Ritual Summon " Black Luster Soldier " ( 3000 / 2500 ) in Attack Position . " Black Luster Soldier " attacks and destroys " Harpie ' s Pet Dragon " ( Mai : 850 → 750 LP ) . Turn 23 : Mai At this point , Mai surrenders . Featured cards . The following cards appeared in this episode . Cards in italics debuted here .