Burning Graveyard

When this card comes into play, sacrifice a
land unless you have two red and two black basic
lands.
{t}: Add 2 {r} and 2 {b} to your mana pool.
{1}, {t}: Create a 1/1 black and red Burning
Zombie creature token with haste and deathtouch.
Even the fires of war give no rest to the dead.