Coldsnap

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 ...

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

Counter target spell unless its controller pays {2} plus an additional {2} for each card named Rune Snag in each graveyard.

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

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

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

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 ta...

Draw two cards, then sacrifice a permanent.

{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 ...

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

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

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

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

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...

Counter target red or green spell.

Whenever Drelnoch becomes blocked, you may draw two cards.

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...

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 ...

You may exile two blue cards from your hand rather than pay this spell's mana cost. Gain control of target noncreature spell. You may choose new t...

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

{T}: Target artifact creature's controller sacrifices it. That player may search their library for a noncreature artifact card, put it onto the bat...