Nitro Warrior Secret Rare

"Nitro Synchron" + 1 non-Tuner monsters Once during each of yours turns, if you activated a Spell Card, this card gains 1000 ATK during its next attack, for damage calculation only. Once per turn, if this attacking card destroys an opponent's monster by battle, you can change 1 face-up Defense Position monster your opponent controls to Attack Position, and attack it with this card.