While Time Dilation from WoW is very cool (and the whole Echo concept for Prevoker in general), I don't think I'd want to see it used on AST. Rather, I think it'd be technical enough to play around for it to be a whole job of it's own. Delay burst damage into a DOT, place HOTs to counteract it, manipulate both HOTs and DOTs in some way, ie extend the HOT to make it last longer (more ticks), or extend the DOT to make it last longer (more ticks, but that means each tick hits for less). Also I vastly prefer how Rewind works compared to Macrocosmos (press to apply buff, then press again to detonate is janky compared to 'press and it instantly rewinds the past 5s of damage)