Like pretty much every comic book character, Doctor Sivana has undergone many changes over the years.
Originally relying simply on the power of science, Doctor Sivana has gained some meta-human abilities thanks to DC’s recent New 52 comic universe reboot.
In the New 52, Doctor Sivana turned to magic when the scientific method failed and he takes some magical lightning to the face for his efforts.
It sounds like here he will also gain further abilities to shoot lightning out of his hands while flying.