Outlaw Hideout

Hideaway (This land comes into play tapped.
When it does, look at the top four cards of your
library, exile one face down, then put the
rest on the bottom of your library.)
{t}: Add {b} to your mana pool.
{b}, {t}: You may play the exiled card without
paying its mana cost if creatures you control
have total power 10 or greater.