Yu-Gi-Oh! - Episode 051

Major Events

 * Keith is under the control of Marik Ishtar, who cheats during this Duel.
 * Whoever wins this Duel gets to keep the Millennium Puzzle, which Keith stole earlier disguised as a fortune teller.
 * Yugi is forced to Duel without Yami.
 * No results as Keith breaks free of Marik's control and Bakura interrupts.

Duel Recap

 * Yugi Summon Celtic Guardian.
 * Keith Sets a monster.
 * Yugi attacks, but the monster is Cyber Jar, which destroys all monsters on the field. It also requires both players to pick up five cards from their Decks and Special Summon any Level 4 or lower. Yugi Sets one while Keith Special Summons Mechanicalchaser and Ground Attacker Bugroth. Yugi finds out the mysterious Duelist is Bandit Keith, but then he reveals he is under the control of Marik, who was not revealed yet.
 * Keith Summons Machine King, whose ATK rises to 2500. It destroys Yugi's face-down Silver Fang.
 * Yugi Sets a monster.
 * Keith Summons Megasonic Eye, raising Machine King's ATK to 2600, who destroys Yugi's face-down Giant Soldier of Stone.
 * Yugi activates Polymerization, sending Curse of Dragon and Gaia the Fierce Knight in his hand to the Graveyard to Fusion Summon Gaia the Dragon Champion. It destroys Mechanicalchaser, dropping Machine King's ATK to 2500 and Keith's Life Points to 1250.
 * Keith switches Megasonic Eye and Ground Attacker Bugroth to Defense Position and activates Machine Conversion Factory, raising all of his monster's ATK and DEF by 300. Machine King, now with 2800 ATK, destroys Yugi's Dragon Champion and drops his Life Points to 1800.
 * Yugi activates Makiu, dropping Keith's Machine-Type monsters' ATK and DEF to their original stats. He then Summons Summoned Skull, whose ATK rises to 3250 by Makiu. It destroys Machine King and drops Keith's Life Points to 500.
 * Keith activates Graceful Charity and Zera Ritual, Tributing his two monsters to Ritual Summon Zera the Mant. It destroys Summoned Skull and drops Yugi's Life Points to 1500.
 * Yugi Sets a monster.
 * Keith Summons Seiyaryu, Sets a card, and activates Stop Defense, forcing Yugi's Koumori Dragon into Attack Position. Zera destroys it, dropping Yugi's Life Points to 400.
 * Yugi Sets a monster.
 * Keith destroys it (Mystical Elf) with Seiyaryu, then Sets two card and switches Zera the Mant to Defense Position.
 * Yugi Summons Dark Magician in Defense Position, Sets a card, and activates Magical Hats, but Keith counters it with Magic Jammer, discarding a card from his hand to cancel the effect of Magical Hats and destroys it.
 * Keith then activates Curse of Fiend, changing the Battle Position of all monsters on the field. He attacks with Zera, but Yugi activates Mirror Force. Keith, however, counters with Solemn Judgment, paying half of his Life Points to negate Mirror Force. Dark Magician is destroyed and Yugi's left with 100 Life Points while Keith has 250.
 * Yugi Sets a card and monster.
 * Keith activates Tribute to the Doomed to destroy Yugi's monster, but Yugi counters with Living Arrow, sending the effect to Zera the Mant, destroying it.
 * Afterwards, Keith breaks free of Marik's control, shatters the Millennium Puzzle, sets the warehouse on fire, and flees. Yami Bakura puts a piece of his spirit into a puzzle piece. Yugi is saved by Joey and Tristan.