[quote=@ADamnFiddle]
<Snipped quote by liferusher>

People with R B D remember things that occurred to them from other R B D possessors and those without the ability lose such information and memories begin to lose nuances. 

Idk maybe im not understanding your vision tho. Does the ability return time back to what it was, or does it simply provide a respawn point akin to a base in an objective - based game? 
[/quote]

Log horizon way, it gets you back to a respawn point. A small area around you resets time sort of. I try to make it that way at least. It is hard to do things with times travelling you know so it always leaves small errors

feel free to provide ideas