Sam, the Mushroom Man

When Sam, the Mushroom Man enters the battlefield, add two 0/1 Shroom Creature tokens
to the battlefield.
Cultivate - At the end of your upkeep, add two 0/1 Shroom Creature tokens to the battlefield, tapped.
{b/g}: Propagate - Add one Propagation Counter to target Shroom (Activate up to three times per turn).

"Advise is like mushrooms. The wrong kind can prove fatal"
-Charles E. McKenzie