3 Blue-Eyes White Dragon

If you watch Yu-Gi-Oh TV series, you see Kaiba have summoned 3 Blue-Eyes White Dragon onto the battlefield. In the Magic rules you can only have 1 Legendary creature in the battlefield. SO THIS IS WHY BLUE-EYES WHITE DRAGON IS NOT A LEGENDARY CREATURE. Even playing Yu-Gi-Oh Duel Links each player can summon 3 Blue-Eyes Dragon each, total of 6.