Snow-Covered Forest

Tribal Flames

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

Snow-Covered Mountain

Generous Ent

Reach
When Generous Ent enters, create a Food token. (It's an artifact with "{2}, {T}, Sacrifice this artifact: You gain 3 life.")
Forestcycling {1} ({1}, Discard this card: Search your library for a Forest card, reveal it, put it into your hand, then shuffle.)

Kird Ape

Kird Ape gets +1/+2 as long as you control a Forest.

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.

Rimewood Falls

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

Highland Forest

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

Snow-Covered Swamp

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.

Snow-Covered Plains

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.

Spell Pierce

Counter target noncreature spell unless its controller pays {2}.

Woodland Chasm

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

Arctic Treeline

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

Tolarian Terror

This spell costs {1} less to cast for each instant and sorcery card in your graveyard.
Ward {2} (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays {2}.)

Lórien Revealed

Draw three cards.
Islandcycling {1} ({1}, Discard this card: Search your library for an Island card, reveal it, put it into your hand, then shuffle.)

Skred

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