The Bias Key

Found in a guard hut in the Slave Port of Alvanor, the key opens the metal braces of the prisoners of Alvanor. The key seems to favour some locks over others. It's unknown if the key fits the rank of the prisoners, or if many keys were made to fit many locks. The key has freed Leilatha and Mistral; Balba, Molissa, Pedron Niall, Aithon Randaer and Leilatha have not been so lucky.

EDIT: everyone has been freed from their shackles at this point. not by this damned key, though.