Ha I KNEW I got that from something. Thanks I just couldn't remember where I had gotten that name, because there was no way I came up with it myself. I'll change the name if I ever publish it. Which I won't. Now I will note that all of these are super OP. But space time cannot change pivotal moments in this reality. Our universe is what I call a Prime Universe. It is trailed by alternant universes, short lived in the tiny differences, with larger ones for bigger changes, and the creative universes which I discuss above. Even the Powerkeeper of space time would not be able to change the past or the future. Time will protect itself in certain spots where things literally cannot be changed. If you actually tried to change things in a no-change zone, all you would do is pop over to the alternant history universe where that major event changed, giving that alternant universe more life than the one caused by you choosing not to take a shower until 3. It is possible to say rescue art and books from where they are about to be destroyed and they no longer matter to the timeline. You can VIEW everything. You just can't CHANGE anything, truly. The only person recorded to change anything was the Great Mage of Space time, actually the first great mage. I haven't hashed out her story yet, so... but she did do some really advanced stuff that no one else can do. I do not want to get tangled in time travel