The Wicked Eraser [CT07-EN011] Super Rare

This card cannot be Special Summoned. This card can only be Tribute Summoned by Tributing 3 monsters on your field. The ATK and DEF of this card is equal to the number of cards on your opponent's field x 1000. When this card is destroyed and sent to the Graveyard, destroy all cards on the field. During your turn, you can destroy this card.