Elder Cathar is a common Creature — Human Soldier card from Innistrad (ISD), collector number 12. Current market price: $0.13 (foil $0.40), TCGplayer market prices via Scryfall.
When this creature dies, put a +1/+1 counter on target creature you control. If that creature is a Human, put two +1/+1 counters on it instead.