Engraver of the Mark (BOSH-EN041) [Breakers of Shadow]

During either player's turn, when your opponent activates a card or effect by declaring exactly 1 card name: You can send this card from your hand to the Graveyard; declare 1 other card name. The card name your opponent declared becomes the card name declared by this effect. Once per turn, during either player's turn: You can target 1 face-up card on the field; destroy it during the End Phase of the next turn.