[quote=@Pirouette]
[@Mr Allen J] Right but can there be an equilibrium or could the regeneration slow the decay to it becoming more akin to a terminal illness type thing? It'd go a long way for motivation.
[/quote]

Oh yeah, someone slowly dying because their ability is constantly in overdrive, pushing them to ash, but at the same time it stops the ash and therefore keeps going in a relentless circle. Sort of horrific, but fascinating at the same time.