Reptilianne Melusine

1 Reptile Tuner + 1+ non-Tuner monstersIf this card was Synchro Summoned using only Reptile monsters as material, it cannot be destroyed by battle or card effects. Once per Chain, when your opponent activates a monster effect, except during the Damage Step (Quick Effect): You can target 1 face-up monster your opponent controls; change its ATK to 0. If this Synchro Summoned card you control is sent to your GY by an opponent's card: You can add 1 Reptile monster from your Deck to your hand.