- [Alexstrasza] : sorry there is no replacement for this card.
- [Archmage Antonidas] : another Freeze spell or [Explosive Sheep]
- [Bloodmage Thalnos] : as someone who has played 2000+ games with freeze mage, I strongly recommend you play a 2nd [Loot Hoarder] or a 5th freeze spell like [Cone of Cold]. These cards have high impact. Lots of people seem to recommend [Kobold Geomancer], however kobold is not very flexible, so I don't recommend it.
- You can run [Archmage Antonidas] or [Pyroblast] or both.If u don't own pyroblast run archmage. If you don't own archmage run 1 copy of pyroblast. If you have neither then I would suggest another deck.
- -1 [Pyroblast]
- +1 [Explosive Sheep]
- -1 [Novice Engineer]
- +1 [Malygos]
Mulligan is really important in Freeze Mage. You dont want any secrets, [Alexstrasza] or [Archmage Antonidas] in your opening hand. The one card that is a 100% keep all the time is [Mad Scientist], [Loot Hoarder] and [Acolyte of Pain].
In general you should : draw or contest board > healing, unless you're close to death. For example: if you have the choice between [Arcane Intellect] or [Ice Barrier] on turn 3, play [Arcane Intellect].
Vs Aggro Decks: you want a defensive card like [Frostbolt] or [Doomsayer]. Then ideally 2 draw minions such as [Mad Scientist] or [Loot Hoarder], to fight there 2 drop. Turn 5 is massive vs zoo, typically you want to [Frost Nova], [Doomsayer]. This allows a turn 6 clean board to play your secret's, acolyte or [Emperor Thaurissan], puttting tempo back on your side.
Playing [Ice Barrier] early vs Face Hunter is key. If you get it late game it has almost zero value, as hunter can just [Kill Command] and hero power without triggering it.
Key play: If an suspected aggro deck, I would recommend coining mad scientist to contest their 1 drop or 2 drop . If a deck play a turn 1 [Leper Gnome] [The Coin] ping is a fine play.
Vs Midrange Decks : Keep 2 cost draw minions like [Mad Scientist], [Loot Hoarder], [Bloodmage Thalnos]. [Arcane Intellect] and [Acolyte of Pain] are also great here. Draw early so u can optimize later plays. Freeze spell get the best value later in the game, were as draw spells get weaker late game.
Vs Druids : Druid is a very hard match up because keepers will silence [Doomsayer] and the combo burst you down. The best strategy is to play minions on turn 2 and [Acolyte of Pain]on turn 3 (even if it only gets 1 draw). You want to make the druid hero power instead of innervating big minions and ramping. Also you need ping down the armor in turns 6,7 and 8. Keep [Frostbolt] as it contests [Darnassus Aspirant]
Consider keeping [Acolyte of Pain] till five mana against slow decks . With a ping you can guarantee at least 2 draws from him.