Blizzard

More often than not, Blizzard is a pipe dream. Frost cards are few and far between, and the damage is very poor even after two cycles of your deck. Blizzard is simply too slow to be effective, and often the aoe aspect is completely irrelevant as there are rarely multiple enemies alive after one or two cycles of your deck. It can work as a sole source of damage in a very thin and Frost heavy deck, simply generating block until this does enough damage to kill. However, there are much more reliable sources of damage that are faster and require less set up. Even when picked up as early as floor one there is no guarantee that you will pick up enough Frost cards to support it (and obviously it is terrible early). Hologram can help you pull more Frost cards, or when you have stacked up enough allows you to play your Blizzard more frequently.