In Cataclysm we killed Murozond in the End Time dungeon who was the leader of the Infinite Dragonflight and the opposite of Nozdormu and then it was said that one day Nozdormu will turn into Murozond, doesn't this mean that he will end up in the same place and be killed by our past selves where their Nozdormu is still normal? This completes the event in a normal circle, we already finished our part.