Card
Underground Sea
Land — Island Swamp · MV 0.0
Oracle text
({T}: Add {U} or {B}.)
Rulings
2008-10-01 · This has basic land types, but it isn't a basic land. Things that affect basic lands don't affect it. Things that affect basic land types do.
2008-10-01 · This has the mana abilities associated with both of its basic land types.