Coastal Excavation

When Coastal Excavation enters the
battlefield, put X search counters on it. At
the beginning of your upkeep, remove a
search counter from Coastal Excavation.
Look at the top four cards of your library.
You may reveal an artifact card and put it in
your hand. Put the rest on the bottom of
your library in a random order. If you
cannot remove a search counter, sacrifice
Coastal Excavation