Rise of the Great Beast: Part 1 - S4-E39
Continuity mistake: When Joey realises everyone Dartz caught is now inside the monster, Kaiba says, "Yeah, well, I'm not about to let him do that to me without a fight." At this moment, Kaiba is wearing a necklace that uses a card as the pendant. On both sides of the pendant, the coat he is wearing is opened enough for the pendant to be fully in view. But in the next shot, the coat is closed further, covering up part of the pendant. (00:05:30)