Coldsteel Heart enters the battlefield tapped. As Coldsteel Heart enters the battlefield, choose a color. {T}: Add one mana of the chosen color.

When Contagion Engine enters the battlefield, put a -1/-1 counter on each creature target player controls. {4}, {T}: Proliferate, then proliferate again. (Choose any number of permanents and/or players, then give each another counter of each kind already there. Then do it again.)

Each player may play an additional land on each of their turns. At the beginning of each player's upkeep, if that player has no cards in hand, that player draws three cards.

At the beginning of each player's draw step, if Howling Mine is untapped, that player draws an additional card.

{S}, {T}: Tap target artifact or creature. ({S} can be paid with one mana from a snow source.)

{T}: Add one mana of any color. At the beginning of your upkeep, put a night counter on Replicating Ring. Then if it has eight or more night counters on it, remove all of them and create eight colorless snow artifact tokens named Replicated Ring with "{T}: Add one mana of any color."

{1}: Look at the top three cards of your library, then put them back in any order. {T}: Draw a card, then put Sensei's Divining Top on top of its owner's library.

{T}, Sacrifice an artifact: Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Trample Abominable Treefolk's power and toughness are each equal to the number of snow permanents you control. When Abominable Treefolk enters the battlefield, tap target creature an opponent controls. That creature doesn't untap during its controller's next untap step.

Flying, vigilance {T}: When target creature other than Adarkar Valkyrie dies this turn, return that card to the battlefield under your control.

{2}: Target snow land you control becomes a 4/4 Elemental creature with hexproof and haste until end of turn. It's still a land. (A creature with hexproof can't be the target of spells or abilities your opponents control.)

Haste {T}: Add one mana of any color. Spend this mana only to cast a creature spell.

When Berg Strider enters the battlefield, tap target artifact or creature an opponent controls. If {S} was spent to cast this spell, that permanent doesn't untap during its controller's next untap step. ({S} is mana from a snow source.)

As long as Centaur Omenreader is tapped, creature spells you cast cost {2} less to cast.

{4}{S}{S}: Monstrosity 2. (If this creature isn't monstrous, put two +1/+1 counters on it and it becomes monstrous. {S} can be paid with one mana from a snow source.) As long as Chillerpillar is monstrous, it has flying.

{1}{U}: Look at the top X cards of your library, where X is the number of cards in your hand, then put them back in any order.

Flying {1}{S}: Snow creatures you control get +1/+1 until end of turn. ({S} can be paid with one mana from a snow source.)

Other Elf creatures you control get +1/+1. {T}: Add {G} for each Elf you control.

{1}{S}: Frostpeak Yeti can't be blocked this turn. ({S} can be paid with one mana from a snow source.)

{2}, {T}: Return target permanent to its owner's hand. Activate only if you control four or more snow permanents.

This spell costs {1} less to cast for each snow land you control. When Icebreaker Kraken enters the battlefield, artifacts and creatures target opponent controls don't untap during that player's next untap step. Return three snow lands you control to their owner's hand: Return Icebreaker Kraken to its owner's hand.

{T}: Put a +1/+1 counter on target creature for each Elf you control.

{T}: Add {G}.

Changeling (This card is every creature type.) You may have Moritte of the Frost enter the battlefield as a copy of a permanent you control, except it's legendary and snow in addition to its other types and, if it's a creature, it enters with two additional +1/+1 counters on it and has changeling.

{X}, {T}: You gain X life.

Flying When Patron of the Valiant enters the battlefield, put a +1/+1 counter on each creature you control with a +1/+1 counter on it.

Phyrexian Ironfoot doesn't untap during your untap step. {1}{S}: Untap Phyrexian Ironfoot. ({S} can be paid with one mana from a snow source.)

Flying {S}, {T}: Draw a card, then discard a card. ({S} can be paid with one mana from a snow source.)

Flying Rimefeather Owl's power and toughness are each equal to the number of snow permanents on the battlefield. {1}{S}: Put an ice counter on target permanent. Permanents with ice counters on them are snow.

{G}{G}, {T}: Creatures you control get +2/+2 until end of turn. {U}{U}, {T}: Return target creature to its owner's hand.

{G}{U}, {T}: Double the number of each kind of counter on target artifact, creature, or land.

Whenever a creature enters the battlefield under your control, you may pay {1}. If you do, put a +1/+1 counter on that creature. {5}{G}, Sacrifice Durable Handicraft: Put a +1/+1 counter on each creature you control.

Enchant creature Cumulative upkeep {S} (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it. {S} can be paid with one mana from a snow source.) Enchanted creature gets +3/+3 for each age counter on Glacial Plating.

Whenever you cast a spell, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Instant and sorcery spells you cast cost {1} less to cast. Whenever you cast an instant or sorcery spell, scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.)

Creatures you control have flying.

Whenever Marit Lage's Slumber or another snow permanent enters the battlefield under your control, scry 1. At the beginning of your upkeep, if you control ten or more snow permanents, sacrifice Marit Lage's Slumber. If you do, create Marit Lage, a legendary 20/20 black Avatar creature token with flying and indestructible.

Enchant snow land you control When On Thin Ice enters the battlefield, exile target creature an opponent controls until On Thin Ice leaves the battlefield.

At the beginning of each player's draw step, that player draws an additional card. Each player may play an additional land on each of their turns.

{3}{U}{U}: Shuffle your library. {X}: Look at the top X cards of your library, then put them back in any order.

Return target permanent you control and target permanent you don't control to their owners' hands.

Return target permanent to its owner's hand.

Put a -1/-1 counter on each attacking creature.

Counter target spell.

Until end of turn, whenever a player taps an Island for mana, that player adds an additional {U}.

Target player draws two cards.

Draw two cards.

Counter target spell. Untap up to four lands.

Look at target player's hand, the top card of that player's library, and any face-down creatures they control. Look at the top four cards of your library, then put them back in any order.

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

Dark Depths enters the battlefield with ten ice counters on it. {3}: Remove an ice counter from Dark Depths. When Dark Depths has no ice counters on it, sacrifice it. If you do, create Marit Lage, a legendary 20/20 black Avatar creature token with flying and indestructible.

You may have Echoing Deeps enter the battlefield tapped as a copy of any land card in a graveyard, except it's a Cave in addition to its other types. {T}: Add {C}.

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

({T}: Add {W}.)

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

{T}: Add {C}. {4}, {T}: Target creature can't be blocked this turn.

Shimmerdrift Vale enters the battlefield tapped. As Shimmerdrift Vale enters the battlefield, choose a color. {T}: Add one mana of the chosen color.

({T}: Add {G}.)

({T}: Add {U}.)

Distribute X +1/+1 counters among any number of creatures you control, where X is the amount of {S} spent to cast this spell. Then draw a card for each creature you control with power 4 or greater.

Draw two cards.

Scry 4, then draw two cards.

Look at the top five cards of your library, then put them back in any order.

Scry 2, then draw a card. (To scry 2, look at the top two cards of your library, then put any number of them on the bottom and the rest on top in any order.)

Search your library for up to two Forest cards, put them onto the battlefield tapped, then shuffle.

Search your library for a snow permanent card, a legendary card, or a Saga card, reveal it, put it into your hand, then shuffle. You gain 1 life for each {S} spent to cast this spell. ({S} is mana from a snow source.)

Search your library for up to two Forest cards, put them onto the battlefield, then shuffle.

Return target permanent to its owner's hand. Storm (When you cast this spell, copy it for each spell cast before it this turn. You may choose new targets for the copies.)