Highly sought after cards include the "Exodia" set, "Blue-Eyes White Dragon", "Dark Magician", "Swords of Revealing Light" and "Raigeki". "Legend of Blue Eyes White Dragon" introduced to players, Normal Monsters, Effect Monsters, Flip Effect Monsters and Fusion Monsters, as well as the concepts of Normal Summoning, Tribute Summoning, and Fusion Summoning. It also introduced players to Normal, Equip, and Field Spell Cards, and Normal and Continuous Trap Cards.