Ru'Havan Tavern

{t} Add {u} to your mana pool.
{u}{t} Add a charge counter on Ru'Havan Tavern.
{u}{u}{t} Remove a charge counter from Ru'Havan Tavern. Reveal the top three cards of your library.
Put a creature from among the revealed cards
into your hand, and the rest at the bottom of
your library.