( can be paid with one mana from a snow source.)

When Arcum's Astrolabe enters the battlefield, draw a card.

, : Add one mana of any color.

When Berg Strider enters the battlefield, tap target artifact or creature an opponent controls. If was spent to cast this spell, that permanent doesn't untap during its controller's next untap step. ( is mana from a snow source.)

Choose one —

• Destroy all creatures.

• Destroy all planeswalkers.

Then return a creature or planeswalker card with mana value X or less from your graveyard to the battlefield, where X is the amount of spent to cast this spell. ( is mana from a snow source.)

Flying

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

: Monstrosity 2. (If this creature isn't monstrous, put two +1/+1 counters on it and it becomes monstrous. can be paid with one mana from a snow source.)

As long as Chillerpillar is monstrous, it has flying.

Cumulative upkeep (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. can be paid with one mana from a snow source.)

If a creature would deal combat damage to you and/or one or more creatures you control, prevent X of that damage, where X is the number of age counters on Cover of Winter.

: Put an age counter on Cover of Winter.

: Add .

: Faceless Haven becomes a 4/3 creature with vigilance and all creature types until end of turn. It's still a land. ( can be paid with one mana from a snow source.)

Flying

: Frost Raptor gains shroud until end of turn. ( can be paid with one mana from a snow source. A creature with shroud can't be the target of spells or abilities.)

: Add .

: Until end of turn, Frostwalk Bastion becomes a 2/3 Construct artifact creature. It's still a land. ( can be paid with one mana from a snow source.)

Whenever Frostwalk Bastion deals combat damage to a creature, tap that creature and it doesn't untap during its controller's next untap step.

Enchant creature

Enchanted creature can't block, and its activated abilities can't be activated.

: Enchanted creature gains defender until end of turn. ( can be paid with one mana from a snow source.)

: Target creature can't block this turn.

: Goblin Rimerunner gains haste until end of turn. ( can be paid with one mana from a snow source.)

: Grim Draugr gets +1/+0 and gains menace until end of turn. (It can't be blocked except by two or more creatures. can be paid with one mana from a snow source.)

, : Tap target artifact or creature. ( can be paid with one mana from a snow source.)

: Icehide Troll gets +2/+0 and gains indestructible until end of turn. Tap it. (Damage and effects that say "destroy" don't destroy it. can be paid with one mana from a snow source.)

Other snow and Zombie creatures you control get +1/+1.

: Return Narfi, Betrayer King from your graveyard to the battlefield tapped. ( can be paid with one mana from a snow source.)

Phyrexian Ironfoot doesn't untap during your untap step.

: Untap Phyrexian Ironfoot. ( can be paid with one mana from a snow source.)

Flying

, : Draw a card, then discard a card. ( can be paid with one mana from a snow source.)

: Regenerate Rimebound Dead. ( can be paid with one mana from a snow source.)

Trample

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

: Target creature blocks target creature this turn if able. ( can be paid with one mana from a snow source.)

: Add .

, : Look at the top card of your library. If that card is snow, you may reveal it and put it into your hand. ( can be paid with one mana from a snow source.)

When Stalking Yeti enters the battlefield, if it's on the battlefield, it deals damage equal to its power to target creature an opponent controls and that creature deals damage equal to its power to Stalking Yeti.

: Return Stalking Yeti to its owner's hand. Activate only as a sorcery. ( can be paid with one mana from a snow source.)

Tundra Fumarole deals 4 damage to target creature or planeswalker. Add for each spent to cast this spell. Until end of turn, you don't lose this mana as steps and phases end. ( is mana from a snow source.)