I don't have the knack for writing you all do, and I doubt anyone will see this nested under the automod, but the first idea that came to my mind seeing this prompt wasn't the effects of the massive amounts of energy created by soul fission, but the opposite

Like an exothermic reaction vs an endothermic reaction, how much energy would need to be taken back IN by wayward souls that determine that they aren't done living and bonding their way back into other living beings?

Edit: I did it anyway, it's not great but I did it