Fire's Mischief

{p/b}{p/b}{p/b}{p/b}, {t}: Reveal the top card of your library,
if the converted mana cost of the revealed card
is less than target spell's converted mana cost,
you lose 4 life. If the revealed card's converted
mana cost is higher than target spell's converted
mana cost, choose new targets for that spell.
Don't burn yourself.