Scarwood Hag is a uncommon Creature — Hag card from The Dark (DRK), collector number 86. Current market price: $0.88, TCGplayer market prices via Scryfall.
{G}{G}{G}{G}, {T}: Target creature gains forestwalk until end of turn. (It can't be blocked as long as defending player controls a Forest.) {T}: Target creature loses forestwalk until end of turn.