Bloom Diva the Melodious Choir

[ Fairy / Fusion / Effect ] 1 "Melodious Maestra" monster + 1 "Melodious" monster Cannot be destroyed by battle or card effects, also you take no battle damage from attacks involving this card. If this card battles a Special Summoned monster, after damage calculation: You can inflict damage to your opponent equal to the difference between the original ATK of that opponent's monster and this card, and if you do, destroy that opponent's monster. ATK/ 1000 DEF/ 2000