Originally posted by GalacticStorm
He never had the power to do it directly. If you look and read the scan you'll see him state himself he took advantage of anomalies left over from crisis to reach the end of time. From there he applied his power to a major conjunction point in time and that action caused the destruction.
Note he broke down Cronal energy to its most simplest basic form and then began to Manipulate it with his G.L. energy. I.e. manipulate entropy (Whichi is basically time). He stated that he could recreate the universe in fashion he desired, including returning the multi verse. The 'end point of time' was a result of destroying reality. I.e. without reality there is no Entropy, without entropy there is no passing of time.