Yu - Gi - Oh ! GX - Chapter 020 " Let the Tournament Begin ! ! " , known as " Start of the Tournament Finals " in the Japanese version , is the twentieth chapter of the " Yu - Gi - Oh ! GX " manga . It was first printed in Japanese in " V Jump " magazine and in English in " Shonen Jump " magazine . Both of which were printed in volume 2 of the " Yu - Gi - Oh ! GX " graphic novels afterwards . Summary . Chancellor Sheppard meets with Dr . Crowler and Professor Hibiki in his office . The two hand him the results of the preliminaries . Five of the eight finalists are first - year students , and two of them are from Slifer Red . Both American students also made the final eight , as well as a single third - year student . The match - ups have been randomly selected , and they will be Jaden Yuki vs . Seika Kohinata , Alexis Rhodes vs . David Rabb , Chazz Princeton vs . Syrus Truesdale and Bastion Misawa vs . Reggie MacKenzie . Jaden approaches David , telling him he made it the finals just as David told him after he declined Jaden ' s duel invitation earlier . David expects to duel Reggie in the finals , as they are in separate blocks . Alexis warns David not to underestimate her , while David is shocked that Syrus also made it to the finals . Zane Truesdale meets with Seika , and is surprised to see her taking dueling seriously . She states she had a change of heart , and wishes to earn title of Miss Duel Academy back through dueling . A short time later , the first duel begins , with Jaden facing Seika . She thinks it ' s convenient for her to face Jaden in the first round , as it was his duel with Alexis that caused her enter this tournament in the first place to assuage her pride . Jaden goes first , and Summons " Elemental Hero Stratos " in Attack Position and Set s a card . Seika Summons " Black Mamba " , whose effect activate s , shifting " Stratos " to Defense Position . This allows " Black Mamba " to attack and destroy it . Seika Sets a card , and Jaden begins his turn . He Summons " Elemental Hero Voltic " and equip s him with " Voltic Spear " , increasing his attack by 1000 points . Jaden attacks , but Seika activates her face - down " Viper ' s Grudge " , letting her Special Summon a Level 4 or lower Reptile - type monster from her Deck each time one of her Reptile - types is sent to the Graveyard . " Black Mamba " is destroyed , so she Summons a second copy from her Deck , whose effect switches " Voltic " to Defense Position . Seika Tribute s " Black Mamba " to Summon " Urubonus , the Avatar of Malice " in Attack Position . " Viper ' s Grudge " activates , letting her Special Summon another " Black Mamba " from her Deck , whose effect switches " Voltic " to Attack Position . Seika attacks , with " Urubonus ' " effect decreasing " Voltic ' s " attack points by 300 , which lets her destroy it . She attacks directly with " Black Mamba " before activating " Swamp of the Dragon Snake " , which will Special Summon a Reptile - type monster from her Deck to Jaden ' s side of the field during each of her End Phase s . She Summons " Poisonous Viper " to Jaden ' s field . Jaden draws , and " Poisonous Viper ' s " effect activates , dealing 500 damage to its controller during the Standby Phase . Jaden Summons " Rai - Oh " in Attack Position and attacks " Black Mamba " . " Rai - Oh ' s " effect prevents both players from taking cards from their Decks in any way besides drawing . Thus , " Viper ' s Grudge " cannot activate . Seika comments that it ' s a troublesome card , but it won ' t matter , as she has enough in her hand to defeat Jaden . Featured Duel : Jaden Yuki vs . Seika Kohinata . Turn 1 : Jaden He then Normal Summon s " Elemental Hero Stratos " ( 1800 / 300 ) in Attack Position and Set s a card . Turn 2 : Seika She then Normal Summons " Black Mamba " ( 1300 / 1000 ) in Attack Position . Since " Black Mamba " was Summoned , its effect activates , switching " Stratos " to Defense Position . " Black Mamba " attack s and destroy s " Stratos " . Seika Sets a card . Turn 3 : Jaden He then Normal Summons " Elemental Hero Voltic " ( 1000 / 1600 ) in Attack Position . He then activates " Voltic Spear " and Equip s it to Voltic " , increasing its ATK by 1000 ( " Elemental Hero Voltic " : 1000 → 2000 / 1600 ) . " Voltic " attacks and destroys " Black Mamba " ( Seika : 4000 → 3300 ) . Seika activates her face - down " Viper ' s Grudge " , which lets her Special Summon a Level 4 or lower Snake monster from her Deck each time one of her Reptile - Type monsters is sent from the field to the Graveyard . Thus , she Special Summons another " Black Mamba " ( 1300 / 1000 ) in Attack Position , and then activates it effect to switch " Voltic " to Defense Position . Turn 4 : Seika Seika draws " Urubonus , the Avatar of Malice " . Seika Tribute s " Black Mamba " to Tribute Summon " Urubonus " ( 2000 / 800 ) in Attack Position . Since a Reptile - Type monster was sent to the Graveyard , " Viper ' s Grudge " activates , letting Seika Special Summon another " Black Mamba " ( 1300 / 1000 ) in Attack Position . The effect of " Black Mamba " switches " Voltic " to Attack Position . Seika attacks " Voltic " with " Urubonus " , whose effect activates , decreasing the ATK of " Voltic " by 300 , ( " Elemental Hero Voltic " : 2000 → 1700 / 1600 ) . " Urubonus destroys " Voltic " ( Jaden : 4000 → 3700 ) . " Black Mamba " attacks Jaden directly ( Jaden : 3700 → 2400 ) . Seika then activates " Swamp of the Dragon Snake " from her hand , allowing her to Special Summon a Level 4 or lower Reptile - Type monster to Jaden ' s side of the field during each of her End Phase s . She Special Summons " Poisonous Viper " ( 100 / 200 ) to Jaden ' s side of the field in Attack Position . Turn 5 : Jaden Jaden draws " Rai - Oh " . During Jaden ' s Standby Phase , the effect of " Poisonous Viper " activates , decreasing Jaden ' s Life Points by 500 ( Jaden : 2400 → 1900 ) . Jaden then Normal Summons " Thunder King Rai - Oh " ( 1900 / 800 ) in Attack Position . " Thunder King Rai - Oh " attacks and destroys " Black Mamba " ( Seika : 3300 → 2700 ) . Jaden then activates the special effect of " Rai - Oh " , which prevents either player from drawing a card from their deck other than in a Normal Draw . This effect negates the activation of " Viper ' s Grudge " , preventing Seika from summoning a new Reptile monster from her deck . Jaden Sets a card . " Duel continues in the next chapter . " Featured cards . The following cards were featured in this chapter . Cards in italics debuted here .