For anyone inspired by Tim Powers' Declare novel and wanted to play in a setting with real world Tradecraft pitted against implacable and inscrutable Supernatural Entities, then "Strong As..." might be up your street. This mini-campaign is set up to allow a complex and nuanced story to to be developed, but with a minimum of GM preparation. It uses the Unknown Armies 3 ruleset, although it can be easily adapted to other systems.