Zilean Ult concept Rewind

What if Zileans Chronoshift acted in a similar way to Ekko? Rather than just being guardians angle on a spell, what if when the ally dies they physically rewind back to when and where the spell was placed on them?

What if the ult could be cast on an enemy too immediately rewinding them back. This could reverse any healing they may have received in a fight.

Discussion tl:dr - "No. You are worse than literal flaming garbage for suggesting this."