Arctic Treeline

({T}: Add {G} or {W}.)
This land enters tapped.

Shimmerdrift Vale

This land enters tapped.
As this land enters, choose a color.
{T}: Add one mana of the chosen color.

Snow-Covered Island

Rimewood Falls

({T}: Add {G} or {U}.)
This land enters tapped.

Isu the Abominable

You may look at the top card of your library any time.
You may play snow lands and cast snow spells from the top of your library.
Whenever another snow permanent you control enters, you may pay {G}, {W}, or {U}. If you do, put a +1/+1 counter on Isu.

Snow-Covered Plains

Command Tower

{T}: Add one mana of any color in your commander's color identity.

Spara's Headquarters

({T}: Add {G}, {W}, or {U}.)
This land enters tapped.
Cycling {3} ({3}, Discard this card: Draw a card.)

Glacial Floodplain

({T}: Add {W} or {U}.)
This land enters tapped.

Snow-Covered Forest

Exotic Orchard

{T}: Add one mana of any color that a land an opponent controls could produce.