Shield

Shields are a set of face-down cards that protect you against a direct attack. At the start of the duel, both players place the top 5 cards of their Deck face-down before drawing. When a Shield is broken, or destoyed by an attack, it goes directly to your hand unless dictated by a card. When all of your Shields are broken, the opponent may attack you directly to win the Duel.

Shield Zone
The Shield Zone (placed to the left of your Deck) is where Shields are placed at the start of the Duel. Some cards allow you to place extra Shields into your Shield Zone. When all Shields in this zone are broken, another attack is needed to win the Duel.