[@Lord Zee] maybe

I've been thinking of a beast pelt cloak type thing. wearing it could give you the heightened senses and such a creature would have but with the drawback of potentially losing yourself to beasthood. werewolf curse type of thing I guess but it's like the third or fourth artifact that makes one go crazy.

otherwise I can think of fitting negatives for a quiver that enchants it's own arrows or turning into a crow.