Centaur Garden

{t}: Add {g} to your mana pool. Centaur Garden
deals 1 damage to you.
Threshold — {g}, {t}, Sacrifice Centaur Garden:
Target creature gets +3/+3 until end of turn.
(Activate this ability only if 7 or more cards are in
your graveyard.)
"I've found far more answers in the woods than I
ever did in the city."
—Nikya of the Old Ways