The Forbidden Ritual: Part 1 - S3-E40
Other mistake: In the English dub, when Adrian first looks at the Exodia cards, they are shown to have the Japanese text and artwork that are used in the original Japanese dub. Cards in the English dub are displayed differently, with the image covering most of the card and the text not seen. (00:03:18)
The Forbidden Ritual: Part 1 - S3-E40
Character mistake: When Aster attempts to attack Adrian with his Destiny Hero Dread Master, Adrian activates a face-down card Dimensional Prison, to which Aster replies "Great, a Counter Trap", however, this card is actually a Normal Trap card. (00:17:05)
The Forbidden Ritual: Part 1 - S3-E40
Revealing mistake: Aster activates the ability of Destiny Hero Dunker, allowing him to send one Destiny Hero monster to his graveyard so that Adrian loses 500 life points. In the shot of the monster being placed into the slot where cards are sent to the graveyard, the bottom of the card is partially laid over the circular light on his duel disk beneath the slot. Despite this, the card remains completely straight and doesn't bend when placed over the light. (00:14:57)
The Forbidden Ritual: Part 1 - S3-E40
Other mistake: When Aster summons Destiny Hero Dunker, in the shot of him showing the card to Adrian, its attack points are 1100, as shown on the card. The monster then appears on the field, and its attack points are 1200, as shown by the attack point display. (00:14:52)
The Forbidden Ritual: Part 1 - S3-E40
Character mistake: Aster uses his Diamond Dude's ability to activate Destiny Draw from his graveyard, allowing him draws two cards from his deck. After doing this he then refers to Destiny Hero Diamond Dude as Destiny Dude instead of Diamond Dude. (00:14:30)
The Forbidden Ritual: Part 1 - S3-E40
Other mistake: When Zane and Aster are looking through Jaden's deck, in the close-up of the cards, Super Polymerization can be seen. Aster then takes the card from the deck to look at it and rotates it 180°. However, the card was already right-side up when it was in the deck, so all Aster would've done is turn the card upside down. (00:04:18)
The Forbidden Ritual: Part 1 - S3-E40
Continuity mistake: When Zane and Aster see Crowler and Echo running away from the beasts, in the shot from behind the two, Aster is slightly behind Zane. When the shot cuts to an angle in front of them, Aster is slightly ahead of Zane. (00:05:04)
The Forbidden Ritual: Part 1 - S3-E40
Continuity mistake: When Zane picks up Echo's necklace, in the shot of him picking up the necklace, his thumb is placed at the bottom of the pendant. But in the next shot, his thumb is over the top of the pendant. (00:06:32)
The Forbidden Ritual: Part 1 - S3-E40
Continuity mistake: When Zane is telling Aster about how he never got to duel the Supreme King, there is a shot focusing on Aster where he is facing Zane, then turns his body 90° to look at the others behind him. Then it cuts to a wider shot, where Aster is facing the others directly and isn't turned away from them. Then he's back to his original position in the next shot. The next shot, he and Zane are side-by-side, even though he was supposed to be facing him directly in the previous shot. (00:04:40)