Eren_fraser
if this is marvel as well then you can get a knowledge divinity. since "demons" appear so does the planetary ward you could use your order and give the ward the ability to make a copy of every written text under the ward for the library in your domain. you could also be the patron of the sorcerers by making a pact kill demons in return of assessing your power with the sorcerer supreme being allowed access to your library of human knowledge.