Sung, shodow sovereign

Sung enters the battlefield
with X +1/+1 counters on it plus Y +1/+1
counters on it where Y is the number of
creatures in your graveyard.
(landfall) whenever a land enters the
battlefield, put the top card of your library
into your graveyard, if it is a creature with
power less or equel to Sung's power put it
onto the battlefield except it is a shadow.