Snow-Covered Forest

Naya Hushblade

As long as you control another multicolored permanent, Naya Hushblade gets +1/+1 and has shroud. (It can't be the target of spells or abilities.)

Snow-Covered Plains

Burning-Tree Emissary

When Burning-Tree Emissary enters, add {R}{G}.

Prismatic Strands

Prevent all damage that sources of the color of your choice would deal this turn.
Flashback—Tap an untapped white creature you control. (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Jund Hackblade

As long as you control another multicolored permanent, Jund Hackblade gets +1/+1 and has haste.

Alpine Meadow

({T}: Add {R} or {W}.)
Alpine Meadow enters tapped.

Wild Cantor

({R/G} can be paid with either {R} or {G}.)
Sacrifice Wild Cantor: Add one mana of any color.

Lobber Crew

Defender
{T}: Lobber Crew deals 1 damage to each opponent.
Whenever you cast a multicolored spell, untap Lobber Crew.

Pentad Prism

Sunburst (This enters with a charge counter on it for each color of mana spent to cast it.)
Remove a charge counter from Pentad Prism: Add one mana of any color.

Weather the Storm

You gain 3 life.
Storm (When you cast this spell, copy it for each spell cast before it this turn.)

Highland Forest

({T}: Add {R} or {G}.)
Highland Forest enters tapped.

Scuzzback Scrapper

Wither (This deals damage to creatures in the form of -1/-1 counters.)

Skred

Skred deals damage to target creature equal to the number of snow permanents you control.

Snow-Covered Mountain

Arctic Treeline

({T}: Add {G} or {W}.)
Arctic Treeline enters tapped.

Wild Nacatl

Wild Nacatl gets +1/+1 as long as you control a Mountain.
Wild Nacatl gets +1/+1 as long as you control a Plains.

Bant Sureblade

As long as you control another multicolored permanent, Bant Sureblade gets +1/+1 and has first strike.