Coldsnap

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

Trample If another creature would die, exile it instead. Put a card exiled with Void Maw into its owner's graveyard: Void Maw gets +2/+2 until en...

Flying {2}{S}: Tap target creature and put an ice counter on it. ({S} can be paid with one mana from a snow source.) Creatures with ice counters ...

Each creature that's a Barbarian, a Warrior, or a Berserker gets +2/+2 and has haste.

Trample, haste Lightning Serpent enters the battlefield with X +1/+0 counters on it. At the beginning of the end step, sacrifice Lightning Serpent.

Cumulative upkeep—Flip a coin. (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep ...

You may exile two red cards from your hand rather than pay this spell's mana cost. Untap all creatures that attacked this turn. After this main ph...

You may exile two black cards from your hand rather than pay this spell's mana cost. Soul Spike deals 4 damage to any target and you gain 4 life.

Cumulative upkeep {B} (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—Gain control of a land you don't control. (At the beginning of your upkeep, put an age counter on this permanent, then sa...

You may cast Haakon, Stromgald Scourge from your graveyard, but not from anywhere else. As long as Haakon is on the battlefield, you may cast Knigh...

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

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...

Other Soldier creatures get +1/+1 and have first strike. (They deal combat damage before creatures without first strike.)

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...

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

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.

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 t...

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

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...

You may exile two white cards from your hand rather than pay this spell's mana cost. Destroy all creatures.

{T}: Add {C}. {1}{S}, {T}: Look at the top card of your library. If that card is snow, you may reveal it and put it into your hand. ({S} can be pai...