Gamble

Search your library for a card, put that card
into your hand, discard a card at random,
then shuffle.
"Sabacc is not a fight, sabacc is life. You can bring
all the skill and cleverness you want, but there's
always going to be that unknown factor, the parts you
can't control. It's civilized in its chaos. The most civilized game in the galaxy."
—Lando Calrissian