Coldsnap decks

I was planning on making some “Ice Age block reunited” decks, but first I wanted to kick together some purely Coldsnap decks (in the extended).

21 Creatures:
Herald of Leshrac
Phyrexian Ironfoot
Phyrexian Snowcrusher
Phyrexian Soulgorger
Rimebound Dead
Martyr of Bones
Stromgald Crusader
16 Spells:
Grim Harvest
Surging Dementia
Chill to the Bone
Feast of Flesh
3 Enchantments:
Phyrexian Etchings
20 Lands:
20× Snow-Covered Swamp

Phyrexian Machines
Concept:
Ideally, this deck rushes early, small creatures to feed the Soulgorger, with Chills and Harvests to clear a path, and Dementias to knock the opponent’s hand a bit. The Snowcrushers come along later with the Herald to finish things as needed, with card draw powered by the Etchings.

20 Creatures:
Karplusan Wolverine
Panglacial Wurm
Aurochs Herd
Bull Aurochs
Boreal Druid
16 Spells:
Icefall
Skred
Rite of Flame
Into the North
20 Land:
Highland Weald
Snow-Covered Forest
Snow-Covered Mountain

Fire and Ice
Concept:
This attemps to be a big critter rush. There are twelve mana-enhancers, eight removal spells, and a synergistic mess of twelve little-to-big critters, with the Wolverines there as a sort of distraction.

60
Vanish into Memory
Sunscour
Surging Aether
Ronom Unicorn
Kjeldoran Javelineer
Martyr of Sands
Adarkar Valkyrie
Martyr of Frost
Counterbalance
Commandeer
Rune Snag
Survivor of the Unseen
Coldsteel Heart
Boreal Shelf
Snow-Covered Island
Snow-Covered Plains

Blue Ice
Concept:
This is meant to be a sort of counter-control deck, relying on a lot of little utility creatures and then a couple big spells and finishers.