Polka, Wandering Circus

While you're searching your library, you may
cast Polka from your library.
{0}, Shuffle Polka into it's owner's library: You
get a visit counter, then choose a color and
non-human creature type, create an X/X
creature token of the chosen color and type,
where X is the number of visit counters you
have. If X is 4 or more, it enters with a trample,
menace or reach counter.