Wicked Smart and steeped in mystery, folklore, and magick...Ravens bring so much to any practice:
 
Divination – call on raven for clarity in prophecy, dreams, and omens.
Shadow work – ravens can help guide you through the dark parts of the self, transformation through acceptance.
Spirit communication – open doors between the worlds, acting as a psychopomp.
Protection – ward with raven energy to shield from negative influences.
Shape-shifting & liminality – excellent ally in hedge-crossing, astral work, and trance.