Runes are what makeShadowhunters different from average humans. They are markings given to the first generation of Shadowhunters by the Angel Raziel to assist them in fighting the Demons they were tasked to eradicate. Every rune known to the Shadowhunters is recorded in the Gray Book. This is a specially crafted book with each rune place in its pages. Copies of the book are rare because each book must be specially made as many of the runes would burn normal paper.
always weird when stuff like this is for a product, like am I buying empowerment? But if I had to choose, rather see this than some of the alternatives. A positive message like this is one I can stomach!