We can try— I'm just not wholly convinced that's how the alleged 'out of existence' part works. Even with these darkblood abilities. It's— I might liken it to entropy: a constant amount, never decreasing. We'd only have to look as far as our own surroundings to see that kind of thing, the way the city fluctuates but never wholly collapses or becomes entirely well.

[He pushes his glasses up to pinch the bridge of his nose, waving his other hand like, never mind, now he's going off on another tangent. Entropy! Listen to him!]

We can try. Let's start with an object and not a person, just in case.