Mjølner, and it is spelled with and "ø", can be used by anyone, many sagas describe it being stolen by jætter, but the real power comes from Thor himself, not his weapon, it is not all that useful in an incompetent hand. By the way Thor and Loke were best buds until the Balder incident.
The Aesir Loki is dead, killed during the Wizarding War by the Guardians of Kandrakar (Will Vandom, Hay Lin, Irma Lair, Taranee Cook, Cornelia Hale, Harry Potter, Luna Lovegood, Ron Weasley, Hermione Granger, Neville Longbottom, Ginny Weasley, Antimony Carver, Katerina Donlan, Zoey Redbird, Stevie Rae, Erza Scarlet, Lisanna Strauss, Lucy Heartfilia, Juvia Lockser, Wendy Marvell and Levy McGarden).
I don't claim to be a writer, just a big lover of Norse mythology, and I hate the marvel perversion, the same way I hate what BBC have done to old legends like Robin Hood and Merlin and king Arthur. I have no idea about thy writings.
Hahaha XD OMG, this... is just awesome. Made me chuckle inside, but really, I can see this happening. I like how Anna is Thor... you know Thor is actually the most powerful character in the marvel universe? I feel like it connects well with what happened in the movie as Anna's spirit and act guides Elsa towards redemption... haha, great work.
WHO KNEW THAT I WOULD RUN OUTSIDE AND SCREAM MY HEAD OFF AT THE AWSOMENESS OF THIS I SCARED THE BIRDS THEN IT STARTED TO THUNDER AND I GRABBED MY THOR HAMMER FROM MY ROOM AND WENT BALLISTIC screaming at the sky.