Barring the 8 cards giving you something, you also have no way to kill your opponent. You just...sit there. The Iceblock decks worked in the Pick 2 because you had a burn spell to accompany it. Sooner or later, you just burned your opponent to death. To win with pure Ice Blocks, you have to ping 30 times. And thanks to fatigue, that simply isn't possible even if you don't consider only having 22 Iceblocks a hindrance to that plan.