Slumbering Colossus

As Slumbering Colossus enters the battlefield or is turned face up, if you control three or more Giant Golem creatures, search your library for a Giant Golem creature card, reveal it and put it into your hand. Shuffle you library afterwards.
Morph {2} (You may cast this face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)
May legends sleep.