King Kai's Planet

Hideaway 4 (When this land enters the battlefield,
look at the top four cards of your library, exile one
face down, then put the rest on the bottom in a
random order.)
King Kai's Planet enters the battlefield
tapped.
{t}: Add {g}.
{g}, {t}: You may play the exiled card without
paying its mana cost if creatures you control have
total power 10 or greater.