Light End Sublimation Dragon

“You can banish 1 Level 8 Dragon monster from your Extra Deck; Special Summon this card from your hand, also you cannot Special Summon for the rest of this turn, except Dragon monsters. During your Main Phase: You can Fusion Summon 1 Fusion Monster from your Extra Deck, using monsters from your hand or field. When an opponent's monster declares an attack: You can make this card lose exactly 500 ATK/DEF, and if you do, that opponent's monster loses 1500 ATK. You can only use each effect of "Light End Sublimation Dragon" once per turn.”