Strangleroot Geist is a uncommon Creature — Spirit card from Dark Ascension (DKA), collector number 127. Current market price: $0.21 (foil $3.62), TCGplayer market prices via Scryfall.
Haste Undying (When this creature dies, if it had no +1/+1 counters on it, return it to the battlefield under its owner's control with a +1/+1 counter on it.)