One Step Ahead: Part Two - S5-E11
Continuity mistake: When Kaiba activates Spell Reproduction, he discards two spell cards from his hand to bring back another spell card from his graveyard. When he does this, the De-Fusion spell card can be seen in his hand. Then, when Kaiba shows Zigfried the Dimension Fusion spell card after it returns to his hand, the De-Fusion card has disappeared from his hand. The De-Fusion card reappears in his hand when Kaiba places the five monster cards on his duel disk. (00:17:45)