Standoff Wager

Each players reveals cards from the top of their library until they reveal a creature card. Auction the creature with the highest power.(To Auction a card each player spends any amount of mana that they choose, once each player has done so the player who spent the most mana may cast the Auctioned card without paying its mana cost.) Each player puts the rest of the revealed cards on the bottom of their libraries in any order.