Tainted Treasure of Betrayal - Silvia

Send 1 "Diabellestarr" monster from your hand or face-up field to the GY, then target 1 face-up card on the field; negate its effects. When your opponent activates a card or effect in response to the activation of your "Diabellestarr" monster's effect or "Tainted Treasure" Spell/Trap Card or effect: You can banish this card from your GY; negate that opponent's effect. You can only use 1 "Tainted Treasure of Betrayal - Silvia" effect per turn, and only once that turn.