Seedling

At the beginning for your Upkeep, Put a Growth Counter on Seedling.
Remove three Growth counters from Seedling, Sacrifice Seedling: Create a Token Copy of
Trees of the Yammara, Except it isn't Legendary.
Remove all Growth counters from Seedling, Sacrifice Seedling: Create a 0/1 Plant Token with
X +1/+1 counters on it, where X is the number
of Growth counters Removed.