Flying, vigilance

{T}: When target creature other than Adarkar Valkyrie dies this turn, return that card to the battlefield under your control.

Flying

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

You may exile two green cards from your hand rather than pay this spell’s mana cost.

Allosaurus Rider’s power and toughness are each equal to 1 plus the number of lands you control.

Arctic Flats enters the battlefield tapped.

{T}: Add {G} or {W}.

Trample

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

When Arctic Nishoba dies, you gain 2 life for each age counter on it.

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

Trample

When Aurochs Herd enters the battlefield, you may search your library for an Aurochs card, reveal it, put it into your hand, then shuffle.

Whenever Aurochs Herd attacks, it gets +1/+0 until end of turn for each other attacking Aurochs.

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 each age counter on it.)

Whenever Balduvian Fallen’s cumulative upkeep is paid, it gets +1/+0 until end of turn for each {B} or {R} spent this way.

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

Target attacking creature gets +X/+0 until end of turn.

Draw a card at the beginning of the next turn’s upkeep.

{T}: Remove target blocking creature from combat. Creatures it was blocking that hadn’t become blocked by another creature this combat become unblocked, then it blocks an attacking creature of your choice. Activate only during the declare blockers step.

Flying

Whenever Blizzard Specter deals combat damage to a player, choose one —

• That player returns a permanent they control to its owner’s hand.

• That player discards a card.

{S}: Boreal Centaur gets +1/+1 until end of turn. Activate only once each turn. ({S} can be paid with one mana from a snow source.)

{T}: Add {C}.

Flying

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

Boreal Shelf enters the battlefield tapped.

{T}: Add {W} or {U}.

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 for each age counter on it.)

At the beginning of each end step, each player gains control of all nontoken permanents they own.

Trample

Whenever Bull Aurochs attacks, it gets +1/+0 until end of turn for each other attacking Aurochs.

Flying

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