only activate if oponent attacks, you probably want to have a mirror wall or something that will deal damage to his HP and destroy his monster... it is a N card.
Well this is instant removal WOD and Mirror Wall sometimes does not instantly remove cards. They have their own merits once monster is dealt with you can pretty much deal LP damage anyway and to say this card should be a N rarity is clear understatement you must not have played the game for long to not realise how good was non targeting monster removal was. Sure its slow but its still does the job
Anonymous
Aquablast