Flying

{1}{S}: Target creature loses flying until end of turn. ({S} can be paid with one mana from a snow source.)

({S} can be paid with one mana from a snow source.)

When Arcum's Astrolabe enters the battlefield, draw a card.

{1}, {T}: Add one mana of any color.

{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.)

{T}: Target snow land becomes a 2/2 creature until end of turn. It's still a land.

{U}, {T}: Target snow land becomes a 2/2 blue Elemental creature with flying. It's still a land.

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.)

Flash

Flying

When Blizzard Strix enters the battlefield, if you control another snow permanent, exile target permanent other than Blizzard Strix. Return that card to the battlefield under its owner's control at the beginning of the next end step.

Target player mills three cards.

Storm (When you cast this spell, copy it for each spell cast before it this turn. You may choose new targets for the copies.)

{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.

{3}: Exile target creature you control.

Sacrifice Cold Storage: Return each creature card exiled with Cold Storage to the battlefield under your control.

Hexproof (This creature can't be the target of spells or abilities your opponents control.)

Coldsteel Heart enters the battlefield tapped.

As Coldsteel Heart enters the battlefield, choose a color.

{T}: Add one mana of the chosen color.

Roll a d20.

1--9 | Tap all creatures your opponents control.

10--19 | Tap all creatures your opponents control. Those creatures don't untap during their controllers' next untap steps.

20 | Tap all creatures your opponents control. Those creatures don't untap during their controllers' next untap steps. Until your next turn, creatures your opponents control enter the battlefield tapped.

Whenever an opponent casts a spell, you may reveal the top card of your library. If you do, counter that spell if it has the same mana value as the revealed card.

Enchant creature

Enchanted creature has base power and toughness 0/4, has defender, loses all other abilities, and is a blue Wall in addition to its other colors and types.

Whenever Drelnoch becomes blocked, you may draw two cards.

Tap up to three target lands.

Counter target red or green spell.

{S}, {T}: Look at the top card of your library. If it's a snow card, you may reveal it and put it into your hand. ({S} can be paid with one mana from a snow source.)

Tap up to two target creatures. Those creatures don't untap during their controller's next untap step.

When Frost Lynx enters the battlefield, tap target creature an opponent controls. That creature doesn't untap during its controller's next untap step.

Flying

{S}{S}: Frost Raptor gains shroud until end of turn. ({S} can be paid with one mana from a snow source. A creature with shroud can't be the target of spells or abilities.)

Flying

When Frost Trickster enters the battlefield, tap target creature an opponent controls. That creature doesn't untap during its controller's next untap step.

When Frost Walker becomes the target of a spell or ability, sacrifice it.

Ward {2} (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays {2}.)

When Frostfist Strider enters the battlefield, tap target creature an opponent controls and put a stun counter on it. (If a permanent with a stun counter would become untapped, remove one from it instead.)

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

Tap up to two target creatures. Those creatures don't untap during their controller's next untap step.

Cycling {1} ({1}, Discard this card: Draw a card.)

{T}: Add {C}.

{1}{S}: Until end of turn, Frostwalk Bastion becomes a 2/3 Construct artifact creature. It's still a land. ({S} can be paid with one mana from a snow source.)

Whenever Frostwalk Bastion deals combat damage to a creature, tap that creature and it doesn't untap during its controller's next untap step.

Flying

{8}: Creatures you control gain flying until end of turn.

Artifacts, creatures, and lands your opponents control enter the battlefield tapped.

Enchant creature

Enchanted creature doesn't untap during its controller's untap step.

When enchanted creature is dealt damage, destroy it.

Enchant creature

Enchanted creature can't attack or block, and its activated abilities can't be activated.

When enchanted creature becomes the target of a spell or ability, destroy Ice Cage.

You may choose not to untap Ice Floe during your untap step.

{T}: Tap target creature without flying that's attacking you. It doesn't untap during its controller's untap step for as long as Ice Floe remains tapped.

Enchant artifact or creature

Enchanted permanent doesn't untap during its controller's untap step.

Whenever another snow permanent enters the battlefield under your control, you may have target player mill two cards.

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

({S} can be paid with one mana from a snow source.)

{2}, Reveal X blue cards from your hand, Sacrifice Martyr of Frost: Counter target spell unless its controller pays {X}.

{T}: Add {C}.

{4}{S}, {T}, Sacrifice Mouth of Ronom: It deals 4 damage to target creature. ({S} can be paid with one mana from a snow source.)

If an opponent had a green creature enter the battlefield under their control this turn, you may pay {U} rather than pay this spell's mana cost.

Tap up to two target creatures. Those creatures don't untap during their controller's next untap step.

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.)

Phyrexian Snowcrusher attacks each combat if able.

{1}{S}: Phyrexian Snowcrusher gets +1/+0 until end of turn. ({S} can be paid with one mana from a snow source.)

Cumulative upkeep--Sacrifice a creature. (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.)

Flying

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

Whenever Queen of Ice deals combat damage to a creature, tap that creature. It doesn't untap during its controller's next untap step.

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Tap target creature. It doesn't untap during its controller's next untap step. (Then exile this card. You may cast the creature later from exile.)

Flash

Enchant creature

When Ray of Frost enters the battlefield, if enchanted creature is red, tap it.

As long as enchanted creature is red, it loses all abilities.

Enchanted creature doesn't untap during its controller's untap step.

{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."

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.

Ward {3} (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays {3}.)

{1}, {T}: Counter target activated ability. Activate only if you control four or more snow permanents. (Mana abilities can't be targeted.)

{1}, {T}: You may tap or untap target permanent. Activate only if you control four or more snow permanents.

Flash

Cone of Cold -- When Scion of Stygia enters the battlefield, choose target creature an opponent controls, then roll a d20.

1--9 | Tap that creature.

10--20 | Tap that creature. It doesn't untap during its controller's next untap step.

Tap up to two target creatures. Those creatures don't untap during their controller's next untap step.

Draw two cards, then discard a card.

Enchant creature

Enchanted creature has flying.

Enchanted creature has first strike as long as it's blocking and you control a snow land.

Defender (This creature can't attack.)

{1}: Snow Fortress gets +1/+0 until end of turn.

{1}: Snow Fortress gets +0/+1 until end of turn.

{3}: Snow Fortress deals 1 damage to target creature without flying that's attacking you.

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

{2}, Sacrifice a snow land: Prevent all combat damage that would be dealt this turn.

Defender

Whenever Wall of Frost blocks a creature, that creature doesn't untap during its controller's next untap step.

Enchant creature

When Winter's Rest enters the battlefield, tap enchanted creature.

As long as you control another snow permanent, enchanted creature doesn't untap during its controller's untap step.