Irene, Subtle Sorceress

{1}{u/r}: Shuffle your library.
{2}{u/r}: Draw two cards, then put two cards from
your hand on top of your library.
{3}{u/r}{u/r}: Reveal the top three cards of your
library. Irene, Subtle Sorceress deals damage to
any target equal to the greatest converted mana
cost among those cards. You may put them back
in any order.