Isn't this a bit too powerful? Sure, it'll block Farenheit. But it will ALSO block creatures. A shield that has a DR of the attack of Farenheit would be pretty strong.
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Replace the Permafrost's with Celcius's. Extra copies in case of PC.Not the best deck, but general idea I guess? You can get out a weapon and the crawlers for pretty cheap, fast, but decent damage, then set a shield up. As you sit there with your quanta accumulating, the shield and the ice bolts will get progressively stronger.
The above deck probably isn't OP. You won't be completely invincible since it takes time to set up. But it would be hard to counter. Rushes don't have creatures that deal 20+ damage each. Sure, you could use PC, but that's like with almost all shields.
I do like the idea though. I can't balance things(*shines a giant light with the OldTrees Logo into the cloudy sky), but I think that a higher divisor would be nice.