The Treewalker (V2)

When The Treewalker enters the battlefield put a number of +1/+0 counters on it equal to half the number of lands you control that can produce green or black mana, and a number equal to the number of black or green creatures you control.
{t}: Add {B}{B}, {B}{G}, or {G}{G}.
{2}{b}{g},{t}: Create two green and black creature tokens named "Dark Tree" with Reach, Defender, and
"{t}: Add {b} or {g}.".