Trying to find a fantasy book where the main character is a female warrior who holds a legendary sword. This sword is actually one of a series of swords (or type of sword) that freezes the hand of non-chosen wielders. The female warrior can fight normally with the sword. However, an army wielding the sword series has to fight in waves and hand off the sword when the wielder's hand gets too cold.
I believe the female warrior was also in a party. Thanks.