The Ultimate Face-Off: Part 1 - S3-E45
Continuity mistake: When everyone is standing around Zane's duel disk at the start of the episode, there is a shot showing the duel disk on the ground, that pans upward toward Syrus. In this shot, Zane's deck cannot be seen in the duel disk. Later, after Bastion picks up Zane's duel disk, in a shot of him saying to Syrus "our friends are still out there", Bastion briefly lifts the duel disk into frame, and the deck can suddenly be seen inside it. (00:02:24 - 00:03:55)