Homecoming Duel: Part 2 - S2-E16
Other mistake: Jaden tells Aster that Elemental Hero Flare Neos gains 400 attack points for every spell and trap card on the field, and since there are 4 spells and traps out, then Flare Neos gains 1600 attack points. The attack points of Flare Neos then go from 2500 up to 4200. This is 1700 points, not 1600. (00:15:40)
Other mistake: When the images in Jaden's cards begin to reappear, one of the cards in his hand is Fusion Sage. Later, when he uses Neo-Spacian Aqua Dolphin's effect, he is discarding Fusion Sage from his hand to the graveyard. That same turn, he uses Aqua Dolphin's effect again, and to do so, he discards another card from his hand. However, Fusion Sage is getting discarded even though it was already discarded earlier that turn and he didn't have any other Fusion Sage cards in his hand. (00:16:48 - 00:17:22)
Other mistake: When Syrus looks at Jaden's cards, in the close-up shot, Elemental Hero Sparkman is shaded orange. Since Sparkman does not have any effects, it should be shaded yellow, not orange. (00:00:32)
Other mistake: When Syrus visits Jaden in the hospital wing, Chazz hands him Jaden's deck, telling him he can't see his cards. Decks are usually said to have 40 cards, but when Syrus spreads the deck of cards apart, there only appear to be about seven cards in his hand, and nowhere near the full deck of cards that was just handed to him. (00:00:29)
Tough Love - S2-E43
Other mistake: When Zane and Aster are talking outside the Duel Academy building, in the shot of Aster saying "I'm just impressed that I beat you on live TV", Zane's deck can be seen inside the duel disk he is wearing. The top card doesn't appear to have the black-coloured oval shape that is usually shown on the cards. (00:02:40)