Edward Nygma, The Riddler

When Edward Nygma, The Riddler enters the battlefield, you may exile the top card of your
library face down. The opponent to your left
must then guess the card type of that card; if
they guess correctly shuffle that card back into
your library. If they guess incorrectly you may
put that card onto the battlefield under your
control. Repeat this for each opponent.
"What does it solve?! What... What did we... solve?
Nothing. Nothing. Nothing. Nothing."