In many places in the anime is mentioned the soul of the cards and the belief in it but what exactly does this mean? Many fans are often confused and relate the soul of the cards with the chance of getting the right card at the right moment. Now is the time to reveal the truth.
The words “soul”, “heart”, “life” and “blood” in some languages are replaced with just one word, which contains them all. Even in the translations of Yu-Gi-Oh! it is translated as either “heart” or “soul” of the cards. This is why most of the time we can think of those words as synonyms.
In the episodes showing the duels in Ancient Egypt it is clear that monsters are connected with the soul of the one summoning them.
The author has the idea, that when people create their deck they put in their ideals and thinking, they put a part of themselves. In other words they put in a part from their soul. When we speak of faith in the soul of the cards, it means that we belief in the power of what we’ve put from ourselves in the deck.