Bitter Harvest

At the beginning of your upkeep, create a 0/1 Green Plant creature token with Defender.
Sacrifice a Plant: Gain 1 life and add {g} to your mana pool.
{g}, Sacrifice a Plant: Gain 1 life and put a +1/+1 counter on target creature.
Through their deep, ancient roots, they are nourished by the world's bitterness.