Lumberknot is a uncommon Creature — Treefolk card from Innistrad (ISD), collector number 191. Current market price: $0.13 (foil $0.49), TCGplayer market prices via Scryfall.
Hexproof (This creature can't be the target of spells or abilities your opponents control.) Whenever a creature dies, put a +1/+1 counter on this creature.