so they're easy to integrate into your campaign
Maybe there was still time
Combined with The French Arm sourcebook
that offers you Edmund Burke’s Gothic perspective on Cthulhu side-by-side with “The Haunter of the Dark” considered as Grail quest
you can find it here
Superworld Companion D20 RPG System - Sword & Sorcery so they're easy to integrateThis Superworld Companion expands the world of super powered roleplaying. It includes: changes for and variants of Superworld powers: new ways to use powers such as Absorption, Defense, Dimension Shift, Emotion Control, Fortune, Gimmick, Illusion Projection, Invisibility, Martial Arts, Mimic, MicroSIZ, Reduction, Resistance, Snare, and Teleport. New Powers: Aura Enhancement, Aura Defense, Cancellation, Clairvoyance, Cosmic Consciousness, Hex,