Cannot be Normal Summoned/Set. Must first be Special Summoned (from your hand) by revealing "Blue-Eyes White Dragon" in your hand. You can only Special Summon "Blue-Eyes Alternative White Dragon" once per turn this way. This card's name becomes "Blue-Eyes White Dragon" while it is on the field or in the Graveyard. Once per turn: You can target 1 monster your opponent controls; destroy it. This card cannot attack the turn this effect is activated.
How to Get
Reveals your hand for cost / Destroys your opponent's Monster Cards
Special Summons itself from your hand / Cannot Normal Summon / Cannot Set / Semi-Nomi / Special Summon by its own condition once per turn