Field of Withering Will

When Field of Withering Will enters the battlefield, look at the top four cards of your
library. Reveal a Squashling creature or planeswalker from among them and put that
card into your hand. Put the rest on the bottom
of your library.
At the beginning of your end step, if you have
played the revealed card and have at least two
Squashling permanents on the battlefield,
transform Field of Withering Will.