Growing Rites of Itlimoc

When Growing Rites of Itlimoc enters the
battlefield, look at the top four cards of your
library. You may reveal a creature card from
among them and put it into your hand. Put the
rest on the bottom of your library in any order.
At the beginning of your end step, if you
control four or more creatures, transform
Growing Rites of Itlimoc.