Majesty of the White Dragons

“Show up to 3 of the "Blue-Eyes White Dragon" in your hand, face-up Monster Zone, and/or GY, then destroy an equal number of cards your opponent controls. You can banish this card from your GY; Ritual Summon 1 Ritual Monster from your hand, by Tributing "Blue-Eyes White Dragon(s)" from your hand or field whose total Levels equal its Level. You can only use each effect of "Majesty of the White Dragons" once per turn.”