The Wicked Eraser (KICO-EN062) [King's Court]

This card cannot be Special Summoned. This card cannot be Normal Summoned or Set except by Tributing 3 monsters. The ATK and DEF of this card are each equal to the number of cards your opponent controls x 1000. When this card is destroyed and sent to the GY, destroy all cards on the field. During your Main Phase, you can destroy this card.