Painful Foresight

At the beginning of your Upkeep look at the top
card of your library, you may put that card on
the bottom of your Library, or pay 1 life and put
it into your Graveyard.
{u}{b}{r}: Exile the top card of your Library, if
it's mana value is less than or equal to three you
may cast that card without paying it's mana cost.
You lose life equal to it's mana value.
Some things are better left unknown