Clara asked, "What's Skaro?"
Missy replied, "The beginning. Where it all started. This is the planet of the Daleks!"

Blooming Marsh

Blooming Marsh enters tapped unless you control two or fewer other lands.
{T}: Add {B} or {G}.

Outlaws of Thunder Junction Promos

Outlaws of Thunder Junction

Blooming Marsh enters the battlefield tapped unless you control two or fewer other lands.
{T}: Add {B} or {G}.

Secret Lair Drop

If one of these lands enters the battlefield at the same time as one or more other lands (due to Oblivion Sower or Warp World, perhaps), it doesn't take those lands into consideration when determining how many other lands you control.

If one of these lands is your first, second, or third land, it enters the battlefield untapped. If you control three or more other lands, however, it enters the battlefield tapped.