This monster can only be Ritual Summoned with the Ritual Spell Card, "White Dragon Ritual". You must also offer monsters whose total Levels Stars equal 4 or more as a Tribute from the field or your hand. When this monster attacks a face-down Defense Position monster, destroy the face-down monster immediately with this card's effect without flipping it face-up or damage calculation. You can Special Summon 1 "Blue-Eyes White Dragon" from your hand or your Deck by offering this card as a Tribute during your Main Phase. (Blue-Eyes White Dragon cannot attack during that turn).