River Song's diary

When River Song's diary enters to the game,
put 3 Spoilers counters on it. When number of
Spoilers counters on River Song's diary is equal
to the zero, sacrifice it: Serach your library for
a creature card named Doctor and put it to the
battlefield tapped, then stuffle your library.
{t}: Remove a Spoilers counter from
River Song's diary: Draw a card.