As a full ascended deity, he can Recreate the world to one of his wishes or other wishes. Ignore time shenanigan's like time reverse at point of someone powers never existed, time acceleration(something similar to clock up), time stop, etc. Reality warp that can bend and rewrite the fundamental laws of the world or the concept of Desire Grand Prox itself, that would be erased by the Grand End. Mostly, yes. Ace was capable to kill Mela and Suel, that are inmortal like all the people of the future that exist as information in the Metaverse and the death of they avatars in the present only cause the respawn of they in the Metaverse/4th Dimension, also they exist as information without a physical body and other things. Also in Geats & Gotchard Winter movie he also was able to reset the dream worlds created by X Wizard magic. And in Kamen Rider Gaim is showed that the "dream worlds" like the one created by Lapis one of the Overlords of Helheim, are actually other time-lines in the...