For example, when you're in a desperate situation and want to make a last stand.
If you don't reveal the opponent's king card in advance, you won't even have a chance for a showdown.
Or when you have a special attack king card and want to make an early play.
Ree Shil had encountered this situation. The Old Curator had a special attack king card.
So when playing cards with the Old Curator, he wouldn't dare to casually play the [Nameless Sword Spirit].
Because [Nameless Sword Spirit] would occupy a king card position, it would make it easier for the Old Curator to find his own king card spot and launch a special attack.
"This [Jeet Kune Do Bodyguard] might be helpful for me in clearing the Seventh Gate."
"But it's definitely not strong enough right now."
"Let's have a preview and see if there are any evolution paths."
Closing his eyes, he began to work.