Is Jorubai Murk Lurker legal in Standard, Modern, and Commander?

Jorubai Murk Lurker is legal in: Modern, Pioneer, Legacy, Vintage, Commander.

What type of card is Jorubai Murk Lurker?

Jorubai Murk Lurker is a Creature — Leech. Its oracle text reads: "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.) Power/Toughness: 1/3"