Jorubai Murk Lurker

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.)

From Magic: The Gathering.

Open the interactive version on https://mythscribe.cloud/app/tcg/cards/cms6oerc2ahv7pb1h3lj67siz.