Diffusion Wave-Motion (YGLD-ENB22) - King of Games: Yugi's Legendary Decks Unlimited

Pay 1000 Life Points, then target 1 Level 7 or higher Spellcaster-Type monster you control; this turn, only that monster can attack, and it must attack all monsters your opponent controls, once each. The effects of Effect Monsters destroyed by these attacks do not activate and are negated.