Card Rulings:Wattmole

TCG Rulings

 * The effect to destroy a face-down Defense Position does not target.


 * It activates immediately at the start of the Damage Step.

Defense Position at the start of the Damage Step you can use this card’s effect to destroy it.
 * If you attack a face-up monster and then activated "Book of Moon", if the attack target monster is in face-down