So, basically this is my idea: It would be a shadow enhanced rebirth the look of the spell could be say instead of Bartleby it could be Mortis with darkmoore in the background.
Spell Stats Name: Resurrection Stats: Heal 850 + Guardian Spirit to all friends
Obviously this could be a bit op and I expect KingsIsle to tweak it if ever added to the game but its just a thought and everyone I tell it too seems to really like it.