Norse Mythology Question

It is that time of year again, where I list my WIPs and archive the ones that are going nowhere, slowly (my rule is if the last time I wrote anything is more than an Olympiad ago, it gets archived), and I have discovered that I require a Norse mythology equivalent of the Furies.

The two obvious things (Vali or any number of Norn) just don't work. I require something both tearing and flapping for my purposes. Ghostly and tearing will also do.

Anyone got any ideas?