There are many times in a Duel where both you and your opponent will want to play a card or use an effect or two after something happens. In situations like that, you don’t just throw down your cards as fast as possible to try to activate them before the other person, and you don’t hold a shouting match to determine who gets to use their monster effect first. No, there’s a specific set of rules that exist to tell you who can activate an effect, and when! And you can find them right here on our website!