Strangleroot Geist is a uncommon Creature — Spirit card from Dark Ascension Promos (PDKA), collector number 127. Current market price: $3.78, 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.)