During damage calculation, if your Spellcaster monster battles an opponent s monster (Quick Effect): You can reveal any number of Spells with different names in your hand, and if you do, your battling monster gains 1000 ATK DEF for each card revealed, until the end of this turn. (Quick Effect): You can discard 1 Spell; negate the effects of all face-up monsters your opponent currently controls, until the end of this turn. You can only use each effect of Witchcrafter Madame Verre once per turn.