Nice. I do enjoy elemental creatures and powers and this delivers, while also adding in characters that feel rage, loss, pride, and love.
My favorite part is the Fury Invoking Mantle: The wielder is not immune to this blast, and as such it is only ever used once. Then the sword gets a new bearer.
A sword that can vaporize its wielder in a suicide attack has crossed over into a new class of uber. :)
I really like this. There are enough little details about Edgar to highlight his personality and how he has responded to adversity.
Possible plot hook: Edgar is wrongfully imprisoned. He fully expects to be exonerated, but only after his trial, which will be in about six months. How can he prove that keeping him locked up will only spell disaster for the locals?