The type of bird in the pic/in my story is called the Simurgh, a species that is rare and protected. It is said that when you tell your wish or prayer to a Simurgh, it will fly to the gods and goddesses and deliver your message with such power and purity that they will have no choice but to grant your wish.
Cassiopeia is a goddess. Her outfit is made out of a family of Simurgh. She killed them all, coated their skulls in silver, and used the wings for decoration. The wings belong to the parents, one torn from each. The skull and wings on her chest is the youngest offspring. She doesn't give a shit what you wish for.