Coldsnap

Whenever a creature dies, Gristle Grinner gets +2/+2 until end of turn.

Sacrifice Garza's Assassin: Destroy target nonblack creature. Recover—Pay half your life, rounded up. (When another creature is put into your grave...

{T}: Target creature gets -1/-1 until end of turn. {4}{B}{B}, {T}, Sacrifice Disciple of Tevesh Szat: Target creature gets -6/-6 until end of turn.

Flying {S}: Chilling Shade gets +1/+1 until end of turn. ({S} can be paid with one mana from a snow permanent.)

Cumulative upkeep {1} (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for ...

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...

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 ...

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 this ability only if you control four or more snow permanents.

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

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 targ...

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

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. Jokulmord...

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...

Whenever Drelnoch becomes blocked, you may draw two cards.

{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.)

Woolly Razorback enters the battlefield with three ice counters on it. As long as Woolly Razorback has an ice counter on it, prevent all combat dam...

Protection from black {W}: White Shield Crusader gains flying until end of turn. {W}{W}: White Shield Crusader gets +1/+0 until end of turn.

Ursine Fylgja enters the battlefield with four healing counters on it. Remove a healing counter from Ursine Fylgja: Prevent the next 1 damage that ...

First strike 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 n...

Flying {S}: Boreal Griffin gains first strike until end of turn. ({S} can be paid with one mana from a snow permanent.)

Sacrifice Ronom Unicorn: Destroy target enchantment.