Suzerain

The Suzerain universe is a fictional version of our world which varies from reality in a couple of subtle ways. Start with the world we live in, and then let's take a tiny step away from reality.

In Suzerain, at the base of everything is the Pulse of all things, a type of energy that has always existed but we're just not aware of, us people of the real world. In Suzerain though, Pulse allows people to do "magic". ESP, shapeshifting into a werewolf, divine miracles. All these things are just unexplained elements of our world, so could be labeled "magic". In the middle ages, if you'd brought along a Zippo lighter and lit a cigarette, that would have been seen as magic. If someone brings technology back from the far future, we might see what they do as "magic" too. But in Suzerain, there's an explanation to it all. And Pulse is the fuel for a lot of what we're calling "magic" today.