User blog comment:Monarch Laciel/The Black Pillars Explanations Page/@comment-31165326-20180612035358/@comment-29853277-20180612040409

"Sweet mercy"

Well, comparatively speaking I guess. Total annihilation does happen when Hallows lose their souls though. Properly lose them I mean. Pro's soul heads off to the Dreamlands occassionally, which causes his entire body to just vanish, and when he comes back the body just recreates itself from scratch.

As it says though, losing the soul doesn't happen very often. About the only person who can currently do anything to the soul is Damian Andreas, who can absorb them from other people into himself (that doesn't destroy the soul, it just means he holds it within himself)