The 10% stacks additively, each time you do the deal, this status is applied to a different 10%. If you sacrifice 10 fingers, the entire world is guaranteed basic human needs (food, water, shelter, clothing, healthcate, etc…)
Nobody knows you saved them. Would you do it?
If everyone knows about the fact that you can do this deal, would that change your mind?
As long as I’m not losing fingers for a “Monkey’s Paw” or genie-style “You get your wish but with a twist” kinda thing, take 'em all.
More thought would need to be invested if there was a twist.
It seems like the twist is you lose fingers