Probity

If a player would flip a coin for the first time in
a turn, instead that player and each of his or her
opponents reveal the top card of their library. If
the player that would have flipped a coin reveals
a card with or tied for the highest converted
mana cost, that player draws a card and "wins
the flip". Otherwise, each of his or her
opponents draws a card and that player "loses
the flip".