The featured card of an anime episode is one which appears in a snippet at the end or at the beginning of the episode. The card is often one which displayed great significance in the episode.
Seasons 2 through 4 of Yu-Gi-Oh! Duel Monsters GX, with the exception of the final two episodes include this feature. All episodes of Yu-Gi-Oh! 5D's featured this, as well as all episodes of Yu-Gi-Oh! ZEXAL thus far. Previous anime episodes and 4Kids dubs do not show featured cards.
At the end of a Duel Monsters GX episode, the card appears on the screen with its details listed alongside it. Early episodes of Yu-Gi-Oh! 5D's had a clip of the card that was to be used in the episode it was shown. Newer episodes show a shot of Yusei holding today's featured card at the start of an episode and next week's featured card at the end of the episode. During the Dark Signers arc, Leo and Luna show up at the beginning of the episode showcasing the featured card, explaining effects it may have.
The TV Tokyo Yu-Gi-Oh! website displays images of the last five featured cards. It usually adds the latest image within a day of the episode airing.
Yu-Gi-Oh! GX featured cardsEdit
Yu-Gi-Oh! 5D's featured cardsEdit
Yu-Gi-Oh! ZEXAL featured cardsEdit
In Yu-Gi-Oh! ZEXAL, the featured card is not always a card used in the episode.