So far in the World of Darkness, most forms of magic seem to be directly connected with being a supernatural entity (or finding a way to have dealings with one). Are there any rules that allow for Mortal spellcasting? Such as allowing them to use a ritual they found in a book. Maybe that ritual is voodoo, maybe it's ancient Latin, or Summarian. This effect wouldn't necessarily allow the to *create* their own spells, or rituals, simply attempt to cast them. Does anything like that exist?