It's High Noon

You and an opponent each create a 2/2 white Human Cowboy creature token with first-strike. Then you and that opponent reveal the top card
of their library. The player who revealed the card with the lowest converted mana cost sacrifices a Human Cowboy creature token created with this spell. If both cards revealed have the same converted mana cost, then both players sacrifice a Human Cowboy creature token created with this spell.