Mardu Woe-Reaper is a uncommon Creature — Human Warrior card from Fate Reforged (FRF), collector number 18. Current market price: $0.28 (foil $1.03), TCGplayer market prices via Scryfall.
Whenever this creature or another Warrior you control enters, you may exile target creature card from a graveyard. If you do, you gain 1 life.