Toy Box (BLTR-EN023)

Once per turn, when an opponent's monster declares an attack: You can send 1 face-down card you control to the GY; destroy that opponent's monster. Once per turn: You can activate 1 of these effects;
• From your hand, Deck, face-up Monster Zone, and/or GY, choose up to 2 monsters with "Toy" in their original names that can Set themselves from the hand as a Spell, and Set them in your Spell & Trap Zone as Spells.
• Destroy up to 2 cards in your Spell & Trap Zone.