You can Ritual Summon this card with “Chaos Form”. Must be Ritual Summoned.
(1) Cannot be targeted by, or destroyed by, an opponent’s card effect.
(2) When this card declares an attack, if this card was Ritual Summoned using “Blue-Eyes White Dragon”: You can activate this effect; if this card attacks a Defense Position monster this turn, inflict piercing battle damage, also change the battle positions of as many monsters your opponent controls as possible, and if you do, the ATK/DEF of each changed monster becomes 0.