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Shambling Vent | Land | | Shambling Vent enters the battlefield tapped.
{T}: Add {W} or {B}.
{1}{W}{B}: Shambling Vent becomes a 2/3 white and black Elemental creature with lifelink until end of turn. It's still a land. | Jung Park
Smoldering Marsh | Land | Swamp Mountain | ({T}: Add {B} or {R}.)
Smoldering Marsh enters the battlefield tapped unless you control two or more basic lands. | Adam Paquette
Sunken Hollow | Land | Island Swamp | ({T}: Add {U} or {B}.)
Sunken Hollow enters the battlefield tapped unless you control two or more basic lands. | Adam Paquette
