It's no secret that Leonarda da Vinci painted secret meanings into his work. There was no exception when he painted a mural depicting the 1440 victory of the Italian League over Milan in the Battle of Anghiari. The painting was put on display in the Palazzo Vecchio and was eventually painted over by painter and architect Giorgio Vasari.
However, before the painting could be covered, a few vessels were made and put in reserve that carry the magic that was once on display and hidden in plain sight. This is the power of soul alchemy. The power gives the people who embrace it the ability to change their soul into that of angel. This is for the purpose of being able to summon any other angel, including the archangels and even the throne angels. You can do this for their magic, their wisdom, the powers and abilities, or simply because you want to. You will need to do research to decide on which angel you wish to summon, but when you wear this piece you will gain this ability. The angels will automatically transcribe their powers to your soul when asked, because you will already have the soul of an angel, which will allow you to identify as one of them.