I've beed trying to find this story for a while. I thought I had it saved to my computer but it has disappeared. :(
When Loki was born Laufy had is mouth sown shut, and it has been his whole life. The only one that can cut the cord tying his mouth is the one that put it on him. He is in a carage tied to a dead Farbauti, and the carage is being brought to Laufy by other Jotuns. Thor, Sif and the W3 show up and find Loki. They think he's a kid a set him free. Loki can talk to Thor through touch in his head. Loki goes off with them and he and Thor get close. Loki saves them from a blizzard and regains energy from Mjolnir.
Later in the story Loki meet a wolf pup, Fenris, and and ice snake, Jormungander.
Thor is also capture and brought to Laufy for fighting and Loki sponsors him.
Hope somebody can find this for me. I've looked but I can't remember what website it was on.
Thank you so much. :)