[quote=@Session]
<Snipped quote by Path>

What if it uses part of itself as a catalyst? I’ve never seen anyone use a soul like that, but if a mage can use their own body to absorb the poison of magic, why can’t their soul do the same?
[/quote]

That’s a dangerous move, bodies are designed to be damaged, but souls, as strong as they can be, are more fragile than bodies and any damage has been seen to be permanent and debilitating to the person.
*taps my chin in thought*
But if a soul were to remove a part of itself to make it’s function as a sort of organ to purge and take on specific damage. I suppose that can be done.