Starving Venemy Dragon Secret Rare

1 DARK monster + 1 Pendulum Monster You can target 1 face-up monster your opponent controls; until the End Phase, this card's name becomes that monster's original name and replace this effect with that monster's original effects, then, that monster loses 500 ATK/DEF, its effects are negated, also inflict 500 damage to your opponent. You can only use this effect of "Starving Venemy Dragon" once per turn. If this card in the Monster Zone is destroyed: You can place this card in your Pendulum Zone.