Where indoctrination meets inquiry, currents roil restlessly beneath the surface.

Seachrome Coast

This land enters tapped unless you control two or fewer other lands.
{T}: Add {W} or {U}.

Bloomburrow Commander

Seachrome Coast enters tapped unless you control two or fewer other lands.
{T}: Add {W} or {U}.

Phyrexia: All Will Be One

Seachrome Coast enters the battlefield tapped unless you control two or fewer other lands.
{T}: Add {W} or {U}.

Phyrexia: All Will Be One Promos

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 enters the battlefield under your control and you control zero, one, or two other lands, it enters the battlefield untapped. If you control three or more other lands, however, it enters the battlefield tapped.