Nemata, Primeval Warden is a rare Legendary Creature — Treefolk card from Dominaria United (DMU), collector number 209. Current market price: $1.20 (foil $1.68), TCGplayer market prices via Scryfall.
Reach If a creature an opponent controls would die, exile it instead. When you do, create a 1/1 green Saproling creature token. {G}, Sacrifice a Saproling: Nemata gets +2/+2 until end of turn. {1}{B}, Sacrifice two Saprolings: Draw a card.