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"And its done!"
Rakasha quickly gave me Uller back, as I inspected his change of appearance, and indeed, he had changed more than I had ever expected. His blade suddenly turned from its former silver and blue color to a black color, as he seemed to be emanating a large quantity of not only ice, but darkness.
His blade looked beautifully refined, with a very metallic feeling to it. The handle had several red and purple jewels, which included a large red and purple jewel. Such jewels materialized from the fragments of materials we got from Ragnarök's corpse, which I handed to Rakasha.
Now that he's a God, he can resist the miasma seeping from such materials by coating his hands with his Divine Power and managed to merge such materials into Uller. That was a part of my suggestion, I didn't wanted Uller to just be "Skadi but a sword" and wanted him to gain his own identity.
Check "The Protagnist's Sister Is Actually the Strongest"!