Game Developers Dilemma

Make your opponent take a risk. Roll a die twice without showing your opponent, and
make them choose between the 1st and 2nd roll.

However, if they guess the lower number, you get a strength buff (+10) to one active card, and they get a nerf to one of theirs (-10); if they pick the larger number, you get the nerf (-10), and they get the buff (+10).