Ooh next time! Next time you're both in the middle of a deadly game! He'd find that enjoyable.

[Chances are Sigma would NOT find that enjoyable. Anyways, to be expected, Dazai has pretty much stumbled upon the way he's cheating by suggesting he guess the card first. The top of the stacked cards is visible in frame but the bottom isn't.

He taps the card on top with his index finger.]

I'm just about to. So, what's your guess?