Odin's Raven Twins

Old Norse and Viking magic are some of my favorite around, so this why I'm so excited about this piece.  This piece summons the presence of a pair of twin entities who manifest themselves on Earth as jet black Ravens.  Their names are Hugin and Munin and they are the messengers of Odin.  They fly all over the world, carrying the messages of Odin to those who are meant to receive them.  When you use this piece to summon the Raven twins, they will appear to full spirit-raven form.  This could be either be in front of your face or in a dream or perhaps even a vision.  You will be able to ask the twins for the Norse Runic Magic that you want.  They will fly to Odin to retrieve the magic that you want and then bring it back to you, placing it in the piece that you used to summon them.