If there are infinite number of universes, wouldn’t one finally allow an omnipotent God that would have dominion over them all?
I don't think you understand. This is complete fiction. There is no proof or evidence. This theory of "multiverse" was conceived of and promulgated by an avowed atheist, Hugh Everett. To be blunt it has been promoted by a culture in which the existence of God is met with scorn and vitriol. In our one universe it is mathematically impossible for all the conditions needed for existence to have come into being randomly. Impossible. There MUST have been a creator or an intelligence. That idea cannot stand among the Godless masses so the "multiverse" is there to allow people to continue to deny God.