AETHER, is the primary fuel and power source for most higher end devices in the Multiverse. For over two centuries this primal energy source has been harvested for its magical and efficient properties.
It's physical properties and appearance differ widely depending on which Reality you're in. It's commonly found as a plasma, solid, liquid, or gaseous combustible whose manipulation makes for a powerful energy source that allows the fantastic travel through time and space that makes the Multiverse possible. It is the primary building block of existence as it spawns the creation of new Realities when enough of it collects in Aetheric Space.
Aether is generated by use of imagination. From fantasy to fear any time the mind of intelligent being is made to speculate and wonder it generates Aether into the Multiverse.