Prairie Stream

({T}: Add {W} or {U}.)
This land enters tapped unless you control two or more basic lands.

Mystic Gate

{T}: Add {C}.
{W/U}, {T}: Add {W}{W}, {W}{U}, or {U}{U}.

This land enters tapped unless you control a Plains or an Island.
{T}: Add {W} or {U}.

This land enters tapped.
When this land enters, sacrifice it unless you return an untapped Plains you control to its owner's hand.
{T}: Add {C}{W}.

This land enters tapped.
{T}, Sacrifice this land: Search your library for a Plains or Island card, put it onto the battlefield, then shuffle.

As this land enters, you may reveal a Plains or Island card from your hand. If you don't, this land enters tapped.
{T}: Add {W} or {U}.

{T}: Add {C}.
{T}: Add {W}. Activate only if you control an Island.
{T}: Add {U}. Activate only if you control a Plains.

This land enters tapped.
When this land enters, return a land you control to its owner's hand.
{T}: Add {W}{U}.

This land enters tapped.
When this land enters, sacrifice it unless you return an untapped Island you control to its owner's hand.
{T}: Add {C}{U}.

({T}: Add {W} or {U}.)
As this land enters, you may pay 2 life. If you don't, it enters tapped.

{T}, Pay 1 life, Sacrifice this land: Search your library for a Plains or Island card, put it onto the battlefield, then shuffle.

{T}: Add {C}.
{T}: Add {W} or {U}. This land deals 1 damage to you.

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

{T}: Add {W}.
{T}: Add {U}. Activate only if you control a Plains or an Island.

This land enters tapped unless you have two or more opponents.
{T}: Add {W} or {U}.