Nemata, Grove Guardian is a uncommon Legendary Creature — Treefolk card from Commander Masters (CMM), collector number 307. Current market price: $0.35 (foil $0.40), TCGplayer market prices via Scryfall.
{2}{G}: Create a 1/1 green Saproling creature token. Sacrifice a Saproling: Saproling creatures get +1/+1 until end of turn.