Why was there only 4 blue-eyes white dragons monster cards in the yugioh anime when you can only have 3 in a deck?

Answer 1

In the Yu-Gi-Oh! anime, the character Seto Kaiba famously possesses four Blue-Eyes White Dragon cards to emphasize his status and power as a duelist. This choice serves a narrative purpose, highlighting his obsession with the card and its significance in his dueling style. While official tournament rules limit decks to three copies of a single card, the anime often bends these rules for dramatic effect and character development.