In the past, it would have been called magic. Now we know it is science; nanotechnology — tiny robots, as small as the cells in our blood, coursing through the bodies of those blessed with their power.
The scientists from the colonies created them to aid their efforts against the plague, but someone subverted their use. Now, they are used by those who desire power, abused to create effects never imagined. All they need is raw material, and a human body has plenty, even if the owner doesn’t realise.
Their power is incredible; for some, they can heal, knitting new bones together when broken, or sealing wounds shortly after they happen; in others, they can create fire and ice from thin air, using the energy their bodies provide. With this power comes a price; overuse can mean death, as the nanites use the body to fuel the powers, consumed in the lust for power.
Even this power can be a dilemma — despite the advances of science, technology still conflicts; choose biotech, cybertech, or nanotech, once chosen, there can be no change.