Serena's Divining Orb

{3}{u}: Search your library for a sorcery card and
an instant card and reveal them. Shuffle one into
your library, then put the other on top. If you
can't reveal a sorcery card and an instant card,
exile Serena's Divining Orb.
{t}: Draw a card, then put Serena's Divining Orb
on top of it's owner's library.
"I see great things in your future." -Serena