Kashyyyk, Wookie Homeworld

{t}: Add {r} or {g} to your mana pool.
{3}{r/g}, {t}: Put a 4/4 green Wookie creature token with trample onto the battlefield.
{4}{r}{g}, {t}: Search your library for X basic land cards, where X equals the number of Wookie creatures you control. Put those cards onto the battlefield tapped, then shuffle your library.