Priestess of the Black Root

When Priestess of the Black Root enters the battlefield create X 1/1 Black Treefolk or X 1/1
Green Dryad tokens.
Whenever a Treefolk or Dryad deals combat
damage to a player, that player gets a seed
counter; Then if that player has 16 or more
seed counters they lose the game.
{1}{b}{g}: Sacrifice two Treefolk and/or Dryads; Proliferate.