Ohm was a Time Lord deity, said in legend to be "chained to the heavens".
When Savar encountered Omega trapped within his black hole, he thought he had found Ohm. (PROSE: The Infinity Doctors [+]Loading...["The Infinity Doctors (novel)"]) The Adherents of Ohm were a secret society on Gallifrey who worshipped Rassilon, Omega, and the Other. (AUDIO: Intervention Earth [+]Loading...["Intervention Earth (audio story)"])