Coldsnap

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

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

Flying Cumulative upkeep—Discard a card. (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay i...

Choose one — • Target nonsnow permanent becomes snow until end of turn. • Target snow permanent isn't snow until end of turn. Draw a card at the be...

Cumulative upkeep {2} (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for ...

Ripple 4 (When you cast this spell, you may reveal the top four cards of your library. You may cast any revealed cards with the same name as this s...

Ronom Serpent can't attack unless defending player controls a snow land. When you control no snow lands, sacrifice Ronom Serpent.

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

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

Enchant creature Cumulative upkeep {U} or {B} (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you ...

Trample Jokulmorder enters the battlefield tapped. When Jokulmorder enters the battlefield, sacrifice it unless you sacrifice five lands. Jokulmord...

Flying Krovikan Mist's power and toughness are each equal to the number of Illusions on the battlefield.

Flying {S}{S}: Frost Raptor gains shroud until end of turn. ({S} can be paid with one mana from a snow permanent. A creature with shroud can't be t...

Enchant creature Enchanted creature doesn't untap during its controller's untap step. When enchanted creature is dealt damage, destroy it.

Counter target red or green spell.

Whenever Drelnoch becomes blocked, you may draw two cards.

Counter target spell. Recover {2}{U}{U} (When a creature is put into your graveyard from the battlefield, you may pay {2}{U}{U}. If you do, return ...

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

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

Exile target creature. You draw cards equal to that creature's power. At the beginning of your next upkeep, return that card to the battlefield und...

Flying Whenever Blizzard Specter deals combat damage to a player, choose one — • That player returns a permanent they control to its owner's hand. ...

Flying Cumulative upkeep—Discard a card. (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay i...

Choose one — • Target nonsnow permanent becomes snow until end of turn. • Target snow permanent isn't snow until end of turn. Draw a card at the...

Cumulative upkeep {2} (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for ...