Multiple times I've been killed on literally the 5th turn from almost full HP and 3-4 minions on board. That is not normal. You'd have to stuff your deck with tech cards (and of course draw those) to stand a chance. Someone above said it's a "fun" deck. Maybe for the person playing it. How many people enjoy or find it fair to play against it? I don't have data but I'd wager not a whole lot. You can't even really rush it down cause of all the freeze spells + Ice Block.
I think best would be if Sorcerer's Apprentice got nerfed (spells cost not less than 1).
Edit: Since then, teched in a Dirty Rat (unfortunately I only have a single copy), succesfully pulled out and killed a Flamewaker. Dealt 29 damage. Was at almost full HP. Then comes an Apprentice and the second Flamewaker and I died in one turn again. I wanted to climb to Legend in Wild (currently at D5-D4). Honestly thinking about giving up on that goal, pretty much all my will to play Wild format has been killed by that deck type. I'm fine with an OTK deck if the combo happens on like turn 8 or something (and the deck not getting free turns off Ice Block). But on turn 5, and pretty regularly, with almost no feasible counterplay possible? Yeah that's not something I wanna participate in.
Edit edit: In case someone cares, I know what I said above sounds like exaggeration, here's the replay. If I should have done anything differently, I welcome criticism, but that last turn is just degenerate regardless of any misplays I may have done. https://hsreplay.net/replay/w48UAV74UbVoLrAt4pZQh8
My problem with things like Mozaki mage is that when I lose I feel like I learned nothing. When I lose against a class that plays a more board-based game, and they beat me with smarter use of resources, it's fine, and upon reviewing the game I may actually learn something and improve. But when it's literally just "ok did you draw your Ice Block and your minions? yes? cool you win", what did I learn? Nothing. It literally doesn't matter what I did during the game. And even when you play hyperaggo decks, you still may very well still lose because of Ice Block. Yes, you can tech in something against it but it's just gonna make your deck worse in every other matchup.
I agree with another poster above about Ice Block. It got HoF-d for a reason. It's such an enormous crutch for Mages in wild that just punishes players who by all means should have won. They are probably never gonna change it, and even if they do and don't know what they could do to not make it completely useless.