That's actually really good. I'm not sure if it'll see play tho, as it needs to be comboed, unless we get some cheap early game freeze so it can be played on curve. Frost Shock will most likely kill targets this early, and combined with Blizzard it's a turn 9 play, at which point it's kinda meh. So overall it's decent, but might not find a place in most decks. 3 mana 3/4 with an upside is huge in arena tho.
Even though some would say this goes in freeze mage, I'd say the fact that it's 3 mana sometime draw a card is not good. You can always at least ping loot hoarder and get a card draw with ease, the 3/4 body is usually not relevant when playing with freeze mage, when most damage is dealt with spells.
Tho in arena and maybe not freeze mage, this could see play.
Well...it's not bad. If we hit some manner of critical mass with freeze spells, it becomes pretty solid. But I think there is a lot of Manic Soulcaster here. A fine card, but usually something else is just a bit better.
It is nice in that freezing is often a low value play, and this can help offset that in a better way than something like Shatter has.