Coldsnap

{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 targ...

Draw two cards, then sacrifice a permanent.

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

Whenever you're dealt damage, you may create that many 1/1 white Soldier creature tokens.

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 This creature enters tapped. When this creature enters, sacrifice it unless you sacrifice five lands. This creature doesn't untap during yo...

{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}: This creature 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 this creature 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 ...

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 ...

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 ta...

{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...

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

This creature enters with three ice counters on it. As long as this creature has an ice counter on it, prevent all combat damage it would deal and ...

Protection from black {W}: This creature gains flying until end of turn. {W}{W}: This creature gets +1/+0 until end of turn.

Defender, flying Cumulative upkeep—An opponent gains 1 life. (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice...

This creature enters with four healing counters on it. Remove a healing counter from this creature: Prevent the next 1 damage that would be dealt t...