I don't remember what Conduit Omni was, but I do remember that it was a new Conduit of this Cycle and according to what Death said that for a Conduit not to have its power, it has to be blocked, so that means that Omni is its first Cycle He must have his Conduit power already unlocked from the start. So his power has something to do with his god powers or his gravity powers?
Also, Infected is supposed to have the power of destruction, so his transformations or other powers are by Conduit's power of him?
That would explain why his powers appear out of nowhere.