Enchanted candle

The Magic Candle is a dark magic item. It could save a life, but an another life must be taken in exchange.

Before the Curse
When Snow White's mother, Queen Eva, becomes gravely ill, Johanna, one of the servants, tells Snow White of a secret that she isn't supposed to know. She tells the young girl that Eva has a secret connection with the Blue Fairy, and that she should go to her if she seeks a way to save her mother. Snow does this and goes out in the middle of the night, seeking the aid of the fairy. Despite having difficulty finding the correct star to wish upon, the Blue Fairy finds her. Snow tells the fairy of her problem, that her mother is dying and they cannot find a cure, but Blue explains that there is nothing she can do, as preventing an inevitable death is not pure magic. A desperate Snow begs Blue for anything to help, so she offers her a magic candle that will save her mother's life, but take the life of another. She promises Snow to never tell anyone of this offer and then Snow takes the candle, reluctant to use it as she wants her mother to see her as a good person. She decides to not use the candle, resulting in her mother dying. After Eva's funeral, the Blue Fairy appears and turns out it was Cora in disguise. She declared to Eva's corpse that the candle was a test for Snow. Then, she told Eva that she will make Snow White's heart black as coal, and destroy the legacy Eva hoped to leave behind.