Return of the Supreme King: Part 3 - S3-E51
Other mistake: When Jaden summons Elemental Hero Clayman in defence mode, the shot pulls out slightly and Jaden says "And now I activate Rainbow Neos' second ability." At this moment, Clayman can be seen on Jaden's duel disk, and the card is placed vertically on the disk, indicating that it is in attack mode. (00:06:55)