i was made bloodborne Scourge Beast Werewolf Replacer Before but i always wanna make them to standalone Creature mod then So did research of that   i didn't placed Creature NPC actor to skyrim world just added to Level list spawn list   so maybe you can't got a chance of spawn that   that's why i include Hentai Creature(https://www.loverslab.com/files/file/5464-more-nasty-critters-special-edition/) addon mod   you can get this summon spell book