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Castle Ardenvale enters the battlefield tapped unless you control a Plains.
{T}: Add {W}.
{2}{W}{W}, {T}: Create a 1/1 white Human creature token.
Once the common lands (such as Mystic Sanctuary) enter the battlefield tapped, there’s no way to untap them with a spell or ability to make their last ability trigger.
Although the common lands have basic land types, they aren’t basic lands.
