Teasing Tree

{g}{g}{g}: Target an opponent's creature with
power 4 or less. You and that creature's
controller each reveal the top card of your
libraries. If your card has the higher converted
mana cost target creature's controller loses 3
Life, otherwise you lose 3 Life. Each player puts
the revealed card back on top of their library.
The myth claimed if you could win her guessing game
she would grant you a wish—or at least let you pass.