Punch-in-the-Box [NECH-EN071] Common Pendulum/Effect Monster You can only use this

You can only use this effect of "Knightmare Mermaid" once per turn

you can destroy 1 card in your Spell & Trap Zone instead

You can only use each of the following effects of “Harpie Oracle” once per turn

You can only activate 1 "Union Hangar" per turn

Punch-in-the-Box [NECH-EN071] Common Pendulum/Effect Monster You can only use thisSet: The New Challengers Card type: Normal Trap Rarity: Common When your opponent's monster declares an attack while they control 2 or more monsters: Target the attacking monster; negate that attack, and if your do, send 1 other monster they control to the Graveyard, then the targeted monster loses ATK equal to the original ATK or DEF (whichever is higher, your choice if tied) of the sent monster in the Graveyard.