Jorubai Murk Lurker is a uncommon Creature — Leech card from Magic 2015 (M15), collector number 65. Current market price: $0.15, TCGplayer market prices via Scryfall.
This creature gets +1/+1 as long as you control a Swamp. {1}{B}: Target creature gains lifelink until end of turn. (Damage dealt by the creature also causes its controller to gain that much life.)