Wan Shi Tong

As an additional cost to play Wan Shi Tong,
discard a card.
Flying
{2},{t}: Look at the top 4 cards of your library.
You may exile an enchantment, instant, or
sorcery from among them. Then put the rest on
the bottom of your library. If you exiled a spell
this way, you may cast that spell from exile, but
it cannot target an opponent or anything an
opponent controls.