To look at (
Before looking at an opponent's card, the player must ask their opponent for permission first; the opponent is not allowed to refuse or ignore a legal request to look at one of their cards.
After looking at cards, they are returned to their original location and position. If cards in the Graveyard or that are banished are being looked at, their order must not be changed. If the top card of the Main Deck is being looked at due to being face-up (such as with "Convulsion of Nature" or "Pharaoh's Treasure"), it may not be picked up to look at it.
Cards that can be looked at
At any time during the Duel, either player may look at the following cards.
- Cards in their hand
- Face-up cards on the field and face-down cards on their own field
- Face-up banished cards and their own face-down banished cards
- Face-up cards in Extra Decks and face-down cards in their own Extra Deck
- Cards attached to Xyz Monsters as Xyz Materials
- A monster that would be Summoned
- Cards in Graveyards
- A face-up card on the top of either player's Main Deck
- Any card that is currently being revealed
Cards that both players can look at are considered public knowledge.
Neither player can look at cards in either player's Main Deck unless a card effect specifies otherwise. Additionally, neither player can look at their opponent's hand or their opponent's face-down cards on the field, in their Extra Deck, or that are banished, unless a card effect allows the player to do so.
Some cards may prevent the player from looking at cards in specific zones. For example, "Question" prevents the opponent from looking at cards in the Graveyard of its controller until it has resolved.