If you have a face-up Pendulum Monster in your Extra Deck, you can Special Summon this card (from your hand). You can only Special Summon "Nemurelia's Dream Defender - Couette" once per turn this way. When your opponent activates a card or effect that targets a "Nemurelia" card(s) you control while you have a face-up "Dreaming Nemurelia" in your Extra Deck (Quick Effect): You can banish 1 face-down card from your Extra Deck, face-down; negate the activation. You can only use this effect of "Nemurelia's Dream Defender - Couette" once per turn.