Permafrost
There may be some of the greatest craftsmen the world has ever seen down on earth, but not one of them can claim to match the gods' greatest smiths without bringing down divine wrath. Made of a metal called coldsteel, a mixture of magical ice and iron, it can not only freeze magic, but it cannot be affected by it either. Still, the price for holding such a weapon is high, as the god infused some of his own power within the blade. It is intensely cold and startlingly heavy, and the Power of Distral flows through it, meaning that if your mana capacity is low, it will probably kill you. Luckily, it's current owner does not have to worry about that.