April 25, 2015 3:48 AM EDT
in the topic
Frostmourne? in the forum
Elder Scrolls
Maybe try finding or crafting a Daedric Greatsword with a frost enchantment on it.
Dremora Merchant (a power from Dragonborn dlc) sells Daedric gear past a certain level.
You might also try Stalhrim greatsword.