Is there an antonym of 'Talisman'

For example "The watch was a ____, it brought me nothing but bad luck"

Using the definition "Something worn that gives good luck" the Antonyms suggested by Mirriam-Webster (Hoodoo and Jinx) don't seem to quite fit the bill.

A composite or a metaphor would work too.. Is there something like a rabbits foot that is said to bring bad luck?

I know it was already brought up in a comment, but jinx has a definition as a noun:

Jinx

(dictionary.com): noun, 1. a person, thing, or influence supposed to bring bad luck.

(M-W): noun, one that brings bad luck;

"That guy is a jinx."

The use in the supplied sentence works fine:

The watch was a jinx, it brought me nothing but bad luck.