Woodland Chasm

({T}: Add {B} or {G}.)
Woodland Chasm enters tapped.

Arctic Treeline

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

Into the North

Search your library for a snow land card, put it onto the battlefield tapped, then shuffle.

Tribal Flames

Domain — Tribal Flames deals X damage to any target, where X is the number of basic land types among lands you control.

Rimewood Falls

({T}: Add {G} or {U}.)
Rimewood Falls enters tapped.

End the Festivities

End the Festivities deals 1 damage to each opponent and each creature and planeswalker they control.

Ardent Elementalist

When Ardent Elementalist enters, return target instant or sorcery card from your graveyard to your hand.

Snow-Covered Forest

Meria's Outrider

Reach
Domain — When Meria's Outrider enters, it deals damage to each opponent equal to the number of basic land types among lands you control.

Spirited Companion

When Spirited Companion enters, draw a card.

Blue Elemental Blast

Choose one —
• Counter target red spell.
• Destroy target red permanent.

Ephemerate

Exile target creature you control, then return it to the battlefield under its owner's control.
Rebound (If you cast this spell from your hand, exile it as it resolves. At the beginning of your next upkeep, you may cast this card from exile without paying its mana cost.)

Snow-Covered Swamp

Nylea's Presence

Enchant land
When Nylea's Presence enters, draw a card.
Enchanted land is every basic land type in addition to its other types.

Snow-Covered Mountain

Navigator's Compass

When Navigator's Compass enters, you gain 3 life.
{T}: Until end of turn, target land you control becomes the basic land type of your choice in addition to its other types.

Dust to Dust

Skred

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

Snow-Covered Island

Ice Tunnel

({T}: Add {U} or {B}.)
Ice Tunnel enters tapped.

Pyroblast

Choose one —
• Counter target spell if it's blue.
• Destroy target permanent if it's blue.

Exploding Borders

Domain — Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle. Exploding Borders deals X damage to target player or planeswalker, where X is the number of basic land types among lands you control.

Highland Forest

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

Electrickery

Electrickery deals 1 damage to target creature you don't control.
Overload {1}{R} (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")

Chainer's Edict

Target player sacrifices a creature of their choice.
Flashback {5}{B}{B} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Shadow Prophecy

Domain — Look at the top X cards of your library, where X is the number of basic land types among lands you control. Put up to two of them into your hand and the rest into your graveyard. You lose 2 life.

Weather the Storm

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

Elvish Visionary

When Elvish Visionary enters, draw a card.

Glacial Floodplain

({T}: Add {W} or {U}.)
Glacial Floodplain enters tapped.

Mulldrifter

Flying
When Mulldrifter enters, draw two cards.
Evoke {2}{U} (You may cast this spell for its evoke cost. If you do, it's sacrificed when it enters.)