{{Infobox/Yu-Gi-Oh!/Episode | series = Yu-Gi-Oh! GXepisode | season = 4 | image name = Series170.jpg | image size = | image caption = | english = | kanji ja_name = 斎王再び！「絶対運命決定力」発動！！ | romaji romaji_name = Saiō Futatabi! Zettai Unmei Ketteiryoku Hatsudō!! | japanese translated ja_trans_name = Saio Returns! The Decisive Power of Absolute Destiny!! | episode number series = 170Yu-Gi-Oh! GX | japanese air date number = January 16, 2008170 | english air date season = 4 | japanese opening ja_opening = [[Precious Time, Glory Days]] | japanese ending ja_ending = [[Endless Dream]] | featured card ja_air_date = January 16, 2008| featured_card = Arcana Force 0 - The Fool(anime)| screenwriter = Koji Ueda

{{episode summary|[[Jaden Yuki|Jaden]] is saved from [[Trueman]] by [[Sartorius]], but the latter is only part of the plot, being forced to [[Duel ]] Jaden in order to save his sister, [[Sarina]].}}

Jaden arrives at the [[KaibaCorp]] building, and his savior reveals himself as [[Sartorius]]. He stated that [[Nightshroud]]'s invasion has begun, and asks Jaden if he would let him check his [[Main Deck|Deck]], saying he should be able to see if any of Jaden's cards have already been infected with Nightshroud's power. He hands Jaden's Deck back, saying it looks fine. He recommends they take one of KaibaCorp's helicopters back to [[Duel Academy]], as with Domino City empty, the next target would be the island. Sartorius reveals that the assault has likely already begun, and in the forest of Duel Academy, [[Taigo Sorano]] is defeating various students, and another Trueman then copies their form, erasing the originals by absorbing them into the [[World of Darkness]]. They reach the floor where the helicopters should be, but none are there. Sartorius challenges Jaden to a [[Duel]], and reveals that if either attempts to leave the room before the Duel ends, bombs placed around the building will explode. Jaden uses Yubel's powers, attempting to see if Sartorius is possessed, but he is not. Sartorius apologizes, but reveals that he has to do this, as [[Sarina]] is being held hostage.

The Duel begins, and Sartorius activates two [[Trap Card]]s - "[[Tour of Doom (anime)|Tour of Doom]]" and "[[Decisive Power of Absolute Destiny]]". The former prevents a [[Duelist|player ]] from Summoning monsters [[Summon]]ing [[Monster Card|monster]]s in any way, depending on how it lands. It lands so that Sartorius, would be unable to Summon, but the latter card lets Sartorius Summon a monster from Jaden's Deck to his [[field]]. He chooses "[[Arcana Force 0 - The Fool (anime)|Arcana Force 0 - The Fool]]", which he reveals he had slipped into Jaden's Deck when he had checked it earlier. With "The Fool" on the field, the [[effect ]] of "Tour of Doom" is reversed, meaning Jaden cannot Summon, and Sartorius is permitted to choose which effect he wants to use for all his cards. This leaves Jaden with no way to defend himself, as he is unable to switch the [[Battle Positionbattle position]] of "The Fool", it can't be [[destroyed in by battle]], and it is immune to card effects. Jaden is quickly reduced to 1000 [[Life Points]]. Jaden questions where Sarina is being held, but Sartorius blames himself for her capture. With his powers of prediction gone when [[The Light of Destruction]] left him, he couldn't predict that she would be in danger. Sartorius activates "[[Sowing of the Fool]]", which will [[send ]] cards from Jaden's Deck to the Graveyard every [[turn]].

==Featured Duel: Jaden Yuki vs. Sartorius==

Sartorius draws "[[Decisive Power of Absolute Destiny]]". He then [[Normal Summon]]s "[[Arcana Force VII - The Chariot (anime)|Arcana Force VII - The Chariot]]" (1700/1700) in [[Attack Position]]. Since "The Chariot" was summoned, it begins to rotate. It lands upright, so Sartorius may [[Special Summon]] any [[Monster Cards|monsters]] that "The Chariot" [[destroyed by battle|destroys in battle]] to his side of the field. Sartorius [[Set]]s two cards (one of which is "Decisive Power of Absolute Destiny").

Jaden draws. On Jaden's Standby Phase, Sartorius activates his face-down "[[Tour of Doom (anime)|Tour of Doom]]", which rotates upon activation. It lands upside down, which would mean that Sartorius is forbidden from summoning any monsters during his next turn, however Sartorius activates his face-down "[[Decisive Power of Absolute Destiny]]" and declares "[[Arcana Force 0 - The Fool (anime)|Arcana Force 0 - The Fool]]" for its effect. As "The Fool" is in Jaden's Deck, it is Special Summoned to Jaden's side of the field (0/0) in Attack Position. Since "The Fool" was summoned, it begins to rotate. It lands upright, so all of Jaden's card effects that target or affect "The Fool" will be negated and the cards of said effects will be destroyed.

Sartorius explains that due to the third effect of "The Fool", he can now select the positions of his cards without having to rotate them. Sartorius makes "Tour of Doom" land upright, so Jaden is forbidden from summoning any monsters this turn.<ref group=Notes name=thefool>In the ''TCG''/''OCG'', "[[Arcana Force 0 - The Fool]]" does not have that last effect.</ref> Jaden's hand contains "[[A Hero Emerges (anime)|A Hero Emerges]]", "[[The Flute of Summoning Kuriboh (anime)|The Flute of Summoning Kuriboh]]", "[[Neospace Wave]]", "[[Miracle Flipper (anime)|Miracle Flipper]]", "[[Elemental Hero Sparkman (anime)|Elemental Hero Sparkman]]", and "[[Polymerization (anime)|Polymerization]]". Jaden sets "The Flute of Summoning Kuriboh".

Jaden draws. On Jaden's Standby Phase, "Tour of Doom" rotates again and Sartorius uses the effect of "The Fool" to make "Tour of Doom" land upright. Jaden activates "Neospace Wave" to send "The Fool" to the Graveyard and Special Summon a "[[Neo-Spacian]]" from his Deck, but "The Fool" negates "Neospace Wave" and destroys it.<ref group=Notes name=thefool2>In the ''TCG''/''OCG'', "[[Arcana Force 0 - The Fool]]" is unaffected by effects that specifically designate it as a [[target]], not all effects.</ref> Jaden tries to switch "The Fool" to Defense Position, but Sartorius states that the second effect of "The Fool" forbids that. Jaden sets a card.

Sartorius draws. "The Chariot" attacks "The Fool", but Jaden activates his face-down "[[Negate Attack (later anime)|Negate Attack]]" to negate the attack and end the [[Battle Phase]]. Sartorius than activates "[[Sowing of the Fool]]" and targets "The Chariot" for its effect. Now during each of his turns, Sartorius can target an Arcana Force monster. For every 300 ATK the targeted monster has, either Jaden or Sartorius has to send one card from the top of their Deck to the Graveyard (depending on the position of "Sowing of the Fool"). Sartorius uses the third effect of "The Fool" to land upside down, so the effect of "Sowing of the Fool" applies to Jaden (Jaden sends "[[Elemental Hero Bubbleman (anime)|Elemental Hero Bubbleman]]", "[[Neo-Spacian Flare Scarab (anime)|Neo-Spacian Flare Scarab]]", "[[Fake Hero (later anime)|Fake Hero]]", "[[Elemental Hero Neos (anime)|Elemental Hero Neos]]" and "[[Elemental Hero Avian (anime)|Elemental Hero Avian]]" to the Graveyard).

''Duel continues in [[Yu-Gi-Oh! GX - Episode 171{{Duelnext|the next episode]]''. ==Errors==* When Jaden draws his opening hand, "[[Elemental Hero Bladedge (anime)|Elemental Hero Bladedge]]" can be clearly seen as well as four other monsters (two Normal Monsters and two Effect Monsters, one of which is "Winged Kuriboh"). When Jaden's hand is seen again, he has one Normal Monster ("Elemental Hero Sparkman"), one Effect monster ("Miracle Flipper"), three Spell Cards ("Neospace Wave", "Polymerization", and "The Flute of Summoning Kuriboh"), and a Trap Card ("A Hero Emerges". However "Bladedge" and "Winged Kuriboh" are no longer in his hand (but they are seen inside his Deck when he finds "Arcana Force 0 - The Fool" inside).Yuki vs Sartorius}}

The following cards appeared in this episode. Cards in italics debuted here. Cards that appeared in the opening can be found [[Precious Time, Glory Days|here]]. Cards that appeared in the ending can be found [[Endless Dream|here]].

|normal monsters =

* [[Elemental Hero Burstinatrix (anime)|Elemental Hero Burstinatrix]]<ref group=Notes name=decksearch>This card can be seen when he searches his Deck to Summon "* [[Arcana Force 0 - The Fool Elemental Hero Clayman (anime)|Arcana Force 0 - The FoolElemental Hero Clayman]]".</ref>

* [[Elemental Hero Sparkman (anime)|Elemental Hero Sparkman]]<ref group=Notes name=hand>This card can be seen in his [[hand]].</ref>|effect monsters =* ''[[Arcana Force 0 - The Fool (anime)|Arcana Force 0 - The Fool]]''<ref group=Notes name=place>This card belongs to Sartorius, but he placed this card into Jaden's Deck when he was checking it.</ref>* [[Card Trooper (anime)|Card Trooper]] x2* [[Dandylion (later anime)|Dandylion]]* [[Elemental Hero Bladedge (anime)|Elemental Hero Bladedge]]<ref group=Notes name=decksearch/>* [[Elemental Hero Bubbleman (anime)|Elemental Hero Bubbleman]]x2* ''[[Miracle Flipper (anime)|Miracle Flipper]]''<ref group=Notes name=hand/>* [[Neo-Spacian Aqua Dolphin (later anime)|Neo-Spacian Aqua Dolphin]]* [[Neo-Spacian Dark Panther (anime)|Neo-Spacian Dark Panther]]* [[Neo-Spacian Flare Scarab (anime)|Neo-Spacian Flare Scarab]] * [[Neo-Spacian Glow Moss (anime)|Neo-Spacian Glow Moss]]<ref group=Notes name=decksearch/>* [[Neo-Spacian Grand Mole (later anime)|Neo-Spacian Grand Mole]]<ref group=Notes name=decksearch/>* [[Winged Kuriboh (later anime)|Winged Kuriboh]]<ref group=Notes name=decksearch/>|normal spells =* [[Fake Hero E - Emergency Call (anime)|Fake HeroE - Emergency Call]]x2* [[Neos Force Fake Hero (later anime)|Neos ForceFake Hero]]<ref group=Notes name=decksearch/>

* [[Polymerization (anime)|Polymerization]] x2<ref group|equip spells =Notes name* [[Neos Force (anime)|Neos Force]]|field spells =hand/><ref group* [[Skyscraper (later anime)|Skyscraper]]|quick-play spells =Notes name=decksearch/>* [[The Flute of Summoning Kuriboh (anime)|The Flute of Summoning Kuriboh]]<ref group=Notes name=hand/>|normal traps =* [[A Hero Emerges (anime)|A Hero Emerges]]<ref group=Notes name=hand/>* [[Hero Barrier (anime)|Hero Barrier]]* [[Hero Signal (later anime)|Hero Signal]]<ref group=Notes name=decksearch/>* [[Mirror Gate (later anime)|Mirror Gate]]<ref group=Notes name|counter traps =decksearch/>

|effect monsters =

|continuous spells =

|normal traps =

{{Decklist|Jaden's thoughts|normal monsters = * [[Elemental Hero Avian (anime)|Elemental Hero Avian]]* [[Elemental Hero Burstinatrix (anime)|Elemental Hero Burstinatrix]]* [[Elemental Hero Clayman (anime)|Elemental Hero Clayman]]* [[Elemental Hero Neos (anime)|Elemental Hero Neos]]Trueman|effect monsters =* [[Neo-Spacian Aqua Dolphin (later anime)|Neo-Spacian Aqua Dolphin]]* [[Neo-Spacian Glow Moss (anime)|Neo-Spacian Glow Moss]]* [[Neo-Spacian Grand Mole Dark Archetype (later anime)|Neo-Spacian Grand MoleDark Archetype]]

|normal monsters =* [[Elemental Hero Clayman (anime)|Elemental Hero Clayman]]<ref group=Notes name=sartorius>This card can be seen when Sartorius slips "[[Arcana Force 0 - The Fool (anime)|Arcana Force 0 - The Fool]]" into Jaden's Deck.</ref>

|effect monsters =

* [[Arcana Force 0 - The Fool (anime)|Arcana Force 0 - The Fool]]* [[Card Trooper (anime)|Card Trooper]] x2<ref group=Notes name=sartorius/>* [[Dandylion (later anime)|Dandylion]]<ref group=Notes name=sartorius/>* [[Elemental Hero Bubbleman (anime)|Elemental Hero Bubbleman]] x2<ref group=Notes name=sartorius/>* [[Neo-Spacian Glow Moss (anime)|Neo-Spacian Glow Moss]]<ref group=Notes name=sartorius/>|field spells =* [[E - Emergency Call (anime)|E - Emergency Call]] x2<ref group=Notes name=sartorius/>* [[Skyscraper (anime)|Skyscraper]]<ref group=Notes name=sartorius/>

{{Decklist|Other|effect monsters ==Errors==* When Jaden [[Draw a card|draw]]s his opening [[hand]], "[[Elemental Hero Bladedge (anime)|Elemental Hero Bladedge]]" can be clearly seen as well as four other [[Monster Card|monster]]s (two [[Normal Monster]]s and two [[Effect Monster]]s, one of which is "[[Winged Kuriboh (later anime)|Winged Kuriboh]]"). When Jaden's hand is seen again, he has one Normal Monster ("[[Elemental Hero Sparkman (anime)|Elemental Hero Sparkman]]"), one Effect Monster ("[[Miracle Flipper (anime)|Miracle Flipper]]"), three [[Spell Card]]s ("[[Neospace Wave]]", "[[Dark Archetype Polymerization (anime)|Dark ArchetypePolymerization]]}} ==Notes==<references group=Notes/>" and "[[The Flute of Summoning Kuriboh (anime)|The Flute of Summoning Kuriboh]]") and a [[Trap Card]] ("[[A Hero Emerges (anime)|A Hero Emerges]]"). However, "Bladedge" and "Winged Kuriboh" are no longer in his hand (but the latter is seen inside his [[Main Deck|Deck]] when he finds "[[Arcana Force 0 - The Fool (anime)|Arcana Force 0 - The Fool]]" there).