Pendulum Encore

During your opponent's Main Phase: You can discard 1 card; immediately after this effect resolves, Pendulum Summon a Pendulum Monster(s), also for the rest of this turn after this card resolves, cards in your Pendulum Zones cannot activate their effects and cannot be destroyed by your card effects, also, shuffle them into the Deck during the End Phase. You can only activate 1 "Pendulum Encore" per turn.